[FlightReply] Type hardening and performance improvements - #36425
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Co-authored-by: Hendrik Liebau <mail@hendrik-liebau.de>
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Co-authored-by: Hendrik Liebau <mail@hendrik-liebau.de> DiffTrain build for [dd45307](react@dd45307)
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Fixes a regression from react#36425 where referenced `FormData` entries can be dropped by `decodeReplyFromBusboy` when files are interleaved with text fields in the payload. `decodeReplyFromBusboy` queues text fields that arrive while a file is being streamed and flushes them after the last file's `'end'`, working around busboy emitting `'end'` deferred relative to subsequent `'field'` events. With multiple files interleaved with text, this loses the relative order of the affected text entries. The reorder was a long-standing but invisible issue — entries came back in the wrong order but were all present — until react#36425 tightened how referenced FormData entries are collected from the backing store to rely on them being contiguous. With that assumption violated, referenced FormDatas can now come back with some entries dropped. The pattern is most easily surfaced through `useActionState` actions that return the submitted `FormData` as part of their state. This replaces the tail-flush with a positionally-tagged buffer drained in arrival order. `flush()` walks from a monotonic index pointer, resolving text immediately and files once their `'end'` has fired, and holding later entries when the cursor lands on a still-streaming file. The backing FormData now matches the payload's order, restoring the contiguity assumption (and fixing the long-standing reorder as a side effect). The same change is applied to all five copies in `react-server-dom-{webpack,turbopack,parcel,esm,unbundled}`. Two new tests cover the multi-file interleave. fixes vercel/next.js#93822
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Fixes a regression from react#36425 where referenced `FormData` entries can be dropped by `decodeReplyFromBusboy` when files are interleaved with text fields in the payload. `decodeReplyFromBusboy` queues text fields that arrive while a file is being streamed and flushes them after the last file's `'end'`, working around busboy emitting `'end'` deferred relative to subsequent `'field'` events. With multiple files interleaved with text, this loses the relative order of the affected text entries. The reorder was a long-standing but invisible issue — entries came back in the wrong order but were all present — until react#36425 tightened how referenced FormData entries are collected from the backing store to rely on them being contiguous. With that assumption violated, referenced FormDatas can now come back with some entries dropped. The pattern is most easily surfaced through `useActionState` actions that return the submitted `FormData` as part of their state. This replaces the tail-flush with a positionally-tagged buffer drained in arrival order. `flush()` walks from a monotonic index pointer, resolving text immediately and files once their `'end'` has fired, and holding later entries when the cursor lands on a still-streaming file. The backing FormData now matches the payload's order, restoring the contiguity assumption (and fixing the long-standing reorder as a side effect). The same change is applied to all five copies in `react-server-dom-{webpack,turbopack,parcel,esm,unbundled}`. Two new tests cover the multi-file interleave. fixes vercel/next.js#93822
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Fixes a regression from react#36425 where referenced `FormData` entries can be dropped by `decodeReplyFromBusboy` when files are interleaved with text fields in the payload. `decodeReplyFromBusboy` queues text fields that arrive while a file is being streamed and flushes them after the last file's `'end'`, working around busboy emitting `'end'` deferred relative to subsequent `'field'` events. With multiple files interleaved with text, this loses the relative order of the affected text entries. The reorder was a long-standing but invisible issue — entries came back in the wrong order but were all present — until react#36425 tightened how referenced FormData entries are collected from the backing store to rely on them being contiguous. With that assumption violated, referenced FormDatas can now come back with some entries dropped. The pattern is most easily surfaced through `useActionState` actions that return the submitted `FormData` as part of their state. This replaces the tail-flush with a positionally-tagged buffer drained in arrival order. `flush()` walks from a monotonic index pointer, resolving text immediately and files once their `'end'` has fired, and holding later entries when the cursor lands on a still-streaming file. The backing FormData now matches the payload's order, restoring the contiguity assumption (and fixing the long-standing reorder as a side effect). The same change is applied to all five copies in `react-server-dom-{webpack,turbopack,parcel,esm,unbundled}`. Two new tests cover the multi-file interleave. fixes vercel/next.js#93822
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Fixes a regression from react#36425 where referenced `FormData` entries can be dropped by `decodeReplyFromBusboy` when files are interleaved with text fields in the payload. `decodeReplyFromBusboy` queues text fields that arrive while a file is being streamed and flushes them after the last file's `'end'`, working around busboy emitting `'end'` deferred relative to subsequent `'field'` events. With multiple files interleaved with text, this loses the relative order of the affected text entries. The reorder was a long-standing but invisible issue — entries came back in the wrong order but were all present — until react#36425 tightened how referenced FormData entries are collected from the backing store to rely on them being contiguous. With that assumption violated, referenced FormDatas can now come back with some entries dropped. The pattern is most easily surfaced through `useActionState` actions that return the submitted `FormData` as part of their state. This replaces the tail-flush with a positionally-tagged buffer drained in arrival order. `flush()` walks from a monotonic index pointer, resolving text immediately and files once their `'end'` has fired, and holding later entries when the cursor lands on a still-streaming file. The backing FormData now matches the payload's order, restoring the contiguity assumption (and fixing the long-standing reorder as a side effect). The same change is applied to all five copies in `react-server-dom-{webpack,turbopack,parcel,esm,unbundled}`. Two new tests cover the multi-file interleave. fixes vercel/next.js#93822
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…36468) Fixes a regression from #36425 where referenced `FormData` entries can be dropped by `decodeReplyFromBusboy` when files are interleaved with text fields in the payload. `decodeReplyFromBusboy` queues text fields that arrive while a file is being streamed and flushes them after the last file's `'end'`, working around busboy emitting `'end'` deferred relative to subsequent `'field'` events. With multiple files interleaved with text, this loses the relative order of the affected text entries. The reorder was a long-standing but invisible issue — entries came back in the wrong order but were all present — until #36425 tightened how referenced FormData entries are collected from the backing store to rely on them being contiguous. With that assumption violated, referenced FormDatas can now come back with some entries dropped. The pattern is most easily surfaced through `useActionState` actions that return the submitted `FormData` as part of their state. This replaces the tail-flush with a linked list of pending files. Text fields that arrive while a file is in flight are queued on the tail file's `queuedFields`; fields that arrive when the list is empty resolve immediately. `flush()` walks from the head, resolving each completed file followed by its queued fields, and stops at the first file that hasn't ended yet. The backing FormData now matches the payload's order, restoring the contiguity assumption (and fixing the long-standing reorder as a side effect). The same change is applied to all five copies in `react-server-dom-{webpack,turbopack,parcel,esm,unbundled}`. Two new tests cover the multi-file interleave. fixes vercel/next.js#93822
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…eact#36468) Fixes a regression from react#36425 where referenced `FormData` entries can be dropped by `decodeReplyFromBusboy` when files are interleaved with text fields in the payload. `decodeReplyFromBusboy` queues text fields that arrive while a file is being streamed and flushes them after the last file's `'end'`, working around busboy emitting `'end'` deferred relative to subsequent `'field'` events. With multiple files interleaved with text, this loses the relative order of the affected text entries. The reorder was a long-standing but invisible issue — entries came back in the wrong order but were all present — until react#36425 tightened how referenced FormData entries are collected from the backing store to rely on them being contiguous. With that assumption violated, referenced FormDatas can now come back with some entries dropped. The pattern is most easily surfaced through `useActionState` actions that return the submitted `FormData` as part of their state. This replaces the tail-flush with a linked list of pending files. Text fields that arrive while a file is in flight are queued on the tail file's `queuedFields`; fields that arrive when the list is empty resolve immediately. `flush()` walks from the head, resolving each completed file followed by its queued fields, and stops at the first file that hasn't ended yet. The backing FormData now matches the payload's order, restoring the contiguity assumption (and fixing the long-standing reorder as a side effect). The same change is applied to all five copies in `react-server-dom-{webpack,turbopack,parcel,esm,unbundled}`. Two new tests cover the multi-file interleave. fixes vercel/next.js#93822 DiffTrain build for [b91823e](react@b91823e)
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…eact#36468) Fixes a regression from react#36425 where referenced `FormData` entries can be dropped by `decodeReplyFromBusboy` when files are interleaved with text fields in the payload. `decodeReplyFromBusboy` queues text fields that arrive while a file is being streamed and flushes them after the last file's `'end'`, working around busboy emitting `'end'` deferred relative to subsequent `'field'` events. With multiple files interleaved with text, this loses the relative order of the affected text entries. The reorder was a long-standing but invisible issue — entries came back in the wrong order but were all present — until react#36425 tightened how referenced FormData entries are collected from the backing store to rely on them being contiguous. With that assumption violated, referenced FormDatas can now come back with some entries dropped. The pattern is most easily surfaced through `useActionState` actions that return the submitted `FormData` as part of their state. This replaces the tail-flush with a linked list of pending files. Text fields that arrive while a file is in flight are queued on the tail file's `queuedFields`; fields that arrive when the list is empty resolve immediately. `flush()` walks from the head, resolving each completed file followed by its queued fields, and stops at the first file that hasn't ended yet. The backing FormData now matches the payload's order, restoring the contiguity assumption (and fixing the long-standing reorder as a side effect). The same change is applied to all five copies in `react-server-dom-{webpack,turbopack,parcel,esm,unbundled}`. Two new tests cover the multi-file interleave. fixes vercel/next.js#93822 DiffTrain build for [b91823e](react@b91823e)
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…eact#36468) Fixes a regression from react#36425 where referenced `FormData` entries can be dropped by `decodeReplyFromBusboy` when files are interleaved with text fields in the payload. `decodeReplyFromBusboy` queues text fields that arrive while a file is being streamed and flushes them after the last file's `'end'`, working around busboy emitting `'end'` deferred relative to subsequent `'field'` events. With multiple files interleaved with text, this loses the relative order of the affected text entries. The reorder was a long-standing but invisible issue — entries came back in the wrong order but were all present — until react#36425 tightened how referenced FormData entries are collected from the backing store to rely on them being contiguous. With that assumption violated, referenced FormDatas can now come back with some entries dropped. The pattern is most easily surfaced through `useActionState` actions that return the submitted `FormData` as part of their state. This replaces the tail-flush with a linked list of pending files. Text fields that arrive while a file is in flight are queued on the tail file's `queuedFields`; fields that arrive when the list is empty resolve immediately. `flush()` walks from the head, resolving each completed file followed by its queued fields, and stops at the first file that hasn't ended yet. The backing FormData now matches the payload's order, restoring the contiguity assumption (and fixing the long-standing reorder as a side effect). The same change is applied to all five copies in `react-server-dom-{webpack,turbopack,parcel,esm,unbundled}`. Two new tests cover the multi-file interleave. fixes vercel/next.js#93822
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…eact#36468) Fixes a regression from react#36425 where referenced `FormData` entries can be dropped by `decodeReplyFromBusboy` when files are interleaved with text fields in the payload. `decodeReplyFromBusboy` queues text fields that arrive while a file is being streamed and flushes them after the last file's `'end'`, working around busboy emitting `'end'` deferred relative to subsequent `'field'` events. With multiple files interleaved with text, this loses the relative order of the affected text entries. The reorder was a long-standing but invisible issue — entries came back in the wrong order but were all present — until react#36425 tightened how referenced FormData entries are collected from the backing store to rely on them being contiguous. With that assumption violated, referenced FormDatas can now come back with some entries dropped. The pattern is most easily surfaced through `useActionState` actions that return the submitted `FormData` as part of their state. This replaces the tail-flush with a linked list of pending files. Text fields that arrive while a file is in flight are queued on the tail file's `queuedFields`; fields that arrive when the list is empty resolve immediately. `flush()` walks from the head, resolving each completed file followed by its queued fields, and stops at the first file that hasn't ended yet. The backing FormData now matches the payload's order, restoring the contiguity assumption (and fixing the long-standing reorder as a side effect). The same change is applied to all five copies in `react-server-dom-{webpack,turbopack,parcel,esm,unbundled}`. Two new tests cover the multi-file interleave. fixes vercel/next.js#93822
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…Busboy` Fixes a regression from react#36425 where referenced `FormData` entries can be dropped by `decodeReplyFromBusboy` when files are interleaved with text fields in the payload. `decodeReplyFromBusboy` queues text fields that arrive while a file is being streamed and flushes them after the last file's `'end'`, working around busboy emitting `'end'` deferred relative to subsequent `'field'` events. With multiple files interleaved with text, this loses the relative order of the affected text entries. The reorder was a long-standing but invisible issue — entries came back in the wrong order but were all present — until react#36425 tightened how referenced FormData entries are collected from the backing store to rely on them being contiguous. With that assumption violated, referenced FormDatas can now come back with some entries dropped. The pattern is most easily surfaced through `useActionState` actions that return the submitted `FormData` as part of their state. This replaces the tail-flush with a linked list of pending files. Text fields that arrive while a file is in flight are queued on the tail file's `queuedFields`; fields that arrive when the list is empty resolve immediately. `flush()` walks from the head, resolving each completed file followed by its queued fields, and stops at the first file that hasn't ended yet. The backing FormData now matches the payload's order, restoring the contiguity assumption (and fixing the long-standing reorder as a side effect). The same change is applied to all five copies in `react-server-dom-{webpack,turbopack,parcel,esm,unbundled}`. Two new tests cover the multi-file interleave.
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…Busboy` Fixes a regression from react#36425 where referenced `FormData` entries can be dropped by `decodeReplyFromBusboy` when files are interleaved with text fields in the payload. `decodeReplyFromBusboy` queues text fields that arrive while a file is being streamed and flushes them after the last file's `'end'`, working around busboy emitting `'end'` deferred relative to subsequent `'field'` events. With multiple files interleaved with text, this loses the relative order of the affected text entries. The reorder was a long-standing but invisible issue — entries came back in the wrong order but were all present — until react#36425 tightened how referenced FormData entries are collected from the backing store to rely on them being contiguous. With that assumption violated, referenced FormDatas can now come back with some entries dropped. The pattern is most easily surfaced through `useActionState` actions that return the submitted `FormData` as part of their state. This replaces the tail-flush with a linked list of pending files. Text fields that arrive while a file is in flight are queued on the tail file's `queuedFields`; fields that arrive when the list is empty resolve immediately. `flush()` walks from the head, resolving each completed file followed by its queued fields, and stops at the first file that hasn't ended yet. The backing FormData now matches the payload's order, restoring the contiguity assumption (and fixing the long-standing reorder as a side effect). The same change is applied to all five copies in `react-server-dom-{webpack,turbopack,parcel,esm,unbundled}`. Two new tests cover the multi-file interleave.
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…Busboy` Fixes a regression from react#36425 where referenced `FormData` entries can be dropped by `decodeReplyFromBusboy` when files are interleaved with text fields in the payload. `decodeReplyFromBusboy` queues text fields that arrive while a file is being streamed and flushes them after the last file's `'end'`, working around busboy emitting `'end'` deferred relative to subsequent `'field'` events. With multiple files interleaved with text, this loses the relative order of the affected text entries. The reorder was a long-standing but invisible issue — entries came back in the wrong order but were all present — until react#36425 tightened how referenced FormData entries are collected from the backing store to rely on them being contiguous. With that assumption violated, referenced FormDatas can now come back with some entries dropped. The pattern is most easily surfaced through `useActionState` actions that return the submitted `FormData` as part of their state. This replaces the tail-flush with a linked list of pending files. Text fields that arrive while a file is in flight are queued on the tail file's `queuedFields`; fields that arrive when the list is empty resolve immediately. `flush()` walks from the head, resolving each completed file followed by its queued fields, and stops at the first file that hasn't ended yet. The backing FormData now matches the payload's order, restoring the contiguity assumption (and fixing the long-standing reorder as a side effect). The same change is applied to all five copies in `react-server-dom-{webpack,turbopack,parcel,esm,unbundled}`. Two new tests cover the multi-file interleave.
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…Busboy` Fixes a regression from react#36425 where referenced `FormData` entries can be dropped by `decodeReplyFromBusboy` when files are interleaved with text fields in the payload. `decodeReplyFromBusboy` queues text fields that arrive while a file is being streamed and flushes them after the last file's `'end'`, working around busboy emitting `'end'` deferred relative to subsequent `'field'` events. With multiple files interleaved with text, this loses the relative order of the affected text entries. The reorder was a long-standing but invisible issue — entries came back in the wrong order but were all present — until react#36425 tightened how referenced FormData entries are collected from the backing store to rely on them being contiguous. With that assumption violated, referenced FormDatas can now come back with some entries dropped. The pattern is most easily surfaced through `useActionState` actions that return the submitted `FormData` as part of their state. This replaces the tail-flush with a linked list of pending files. Text fields that arrive while a file is in flight are queued on the tail file's `queuedFields`; fields that arrive when the list is empty resolve immediately. `flush()` walks from the head, resolving each completed file followed by its queued fields, and stops at the first file that hasn't ended yet. The backing FormData now matches the payload's order, restoring the contiguity assumption (and fixing the long-standing reorder as a side effect). The same change is applied to all five copies in `react-server-dom-{webpack,turbopack,parcel,esm,unbundled}`. Two new tests cover the multi-file interleave.
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…Busboy` Fixes a regression from react#36425 where referenced `FormData` entries can be dropped by `decodeReplyFromBusboy` when files are interleaved with text fields in the payload. `decodeReplyFromBusboy` queues text fields that arrive while a file is being streamed and flushes them after the last file's `'end'`, working around busboy emitting `'end'` deferred relative to subsequent `'field'` events. With multiple files interleaved with text, this loses the relative order of the affected text entries. The reorder was a long-standing but invisible issue — entries came back in the wrong order but were all present — until react#36425 tightened how referenced FormData entries are collected from the backing store to rely on them being contiguous. With that assumption violated, referenced FormDatas can now come back with some entries dropped. The pattern is most easily surfaced through `useActionState` actions that return the submitted `FormData` as part of their state. This replaces the tail-flush with a linked list of pending files. Text fields that arrive while a file is in flight are queued on the tail file's `queuedFields`; fields that arrive when the list is empty resolve immediately. `flush()` walks from the head, resolving each completed file followed by its queued fields, and stops at the first file that hasn't ended yet. The backing FormData now matches the payload's order, restoring the contiguity assumption (and fixing the long-standing reorder as a side effect). The same change is applied to all five copies in `react-server-dom-{webpack,turbopack,parcel,esm,unbundled}`. Two new tests cover the multi-file interleave.
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…eact#36468) Fixes a regression from react#36425 where referenced `FormData` entries can be dropped by `decodeReplyFromBusboy` when files are interleaved with text fields in the payload. `decodeReplyFromBusboy` queues text fields that arrive while a file is being streamed and flushes them after the last file's `'end'`, working around busboy emitting `'end'` deferred relative to subsequent `'field'` events. With multiple files interleaved with text, this loses the relative order of the affected text entries. The reorder was a long-standing but invisible issue — entries came back in the wrong order but were all present — until react#36425 tightened how referenced FormData entries are collected from the backing store to rely on them being contiguous. With that assumption violated, referenced FormDatas can now come back with some entries dropped. The pattern is most easily surfaced through `useActionState` actions that return the submitted `FormData` as part of their state. This replaces the tail-flush with a linked list of pending files. Text fields that arrive while a file is in flight are queued on the tail file's `queuedFields`; fields that arrive when the list is empty resolve immediately. `flush()` walks from the head, resolving each completed file followed by its queued fields, and stops at the first file that hasn't ended yet. The backing FormData now matches the payload's order, restoring the contiguity assumption (and fixing the long-standing reorder as a side effect). The same change is applied to all five copies in `react-server-dom-{webpack,turbopack,parcel,esm,unbundled}`. Two new tests cover the multi-file interleave. fixes vercel/next.js#93822
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* [Flight] Restore standard React version placeholder * [Flight Reply] Early bailout if backing entry for Blob deserialization is not a Blob (react#36055) Co-authored-by: Hendrik Liebau <mail@hendrik-liebau.de> (cherry picked from commit 12ba7d8) * [Flight] Avoid consuming cyclic models multiple times Co-authored-by: "Sebastian \"Sebbie\" Silbermann" <sebastian.silbermann@vercel.com> (cherry picked from commit 672b242) * [FlightReply] Type hardening and performance improvements Co-authored-by: Hendrik Liebau <mail@hendrik-liebau.de> (cherry picked from commit 795203e) * [FlightReply] Don't drop FormData entries in `decodeReplyFromBusboy` (react#36468) Fixes a regression from react#36425 where referenced `FormData` entries can be dropped by `decodeReplyFromBusboy` when files are interleaved with text fields in the payload. `decodeReplyFromBusboy` queues text fields that arrive while a file is being streamed and flushes them after the last file's `'end'`, working around busboy emitting `'end'` deferred relative to subsequent `'field'` events. With multiple files interleaved with text, this loses the relative order of the affected text entries. The reorder was a long-standing but invisible issue — entries came back in the wrong order but were all present — until react#36425 tightened how referenced FormData entries are collected from the backing store to rely on them being contiguous. With that assumption violated, referenced FormDatas can now come back with some entries dropped. The pattern is most easily surfaced through `useActionState` actions that return the submitted `FormData` as part of their state. This replaces the tail-flush with a linked list of pending files. Text fields that arrive while a file is in flight are queued on the tail file's `queuedFields`; fields that arrive when the list is empty resolve immediately. `flush()` walks from the head, resolving each completed file followed by its queued fields, and stops at the first file that hasn't ended yet. The backing FormData now matches the payload's order, restoring the contiguity assumption (and fixing the long-standing reorder as a side effect). The same change is applied to all five copies in `react-server-dom-{webpack,turbopack,parcel,esm,unbundled}`. Two new tests cover the multi-file interleave. fixes vercel/next.js#93822 (cherry picked from commit b91823e) * [FlightReply] Performance improvements when decoding (react#37087) This fixes security vulnerabilities in Server Functions. (cherry picked from commit 1dd4ecb) * [Flight Reply] Align Rspack decoders with upstream changes Mirror the selected Reply changes into the Rspack-owned browser, edge, and Node adapters after the dependency-closed upstream backports. Forward caller-provided array size limits, preserve multipart field/file order, and settle failed async iterators without recursive error re-entry. Add public behavior coverage across every Rspack decoder, action-selection path, cyclic collection type, iterator settlement, and Busboy ordering direction. This is a tactical source-parity change for the existing proposal branch; it does not make that branch current with React main. --------- Co-authored-by: Sebastian "Sebbie" Silbermann <sebastian.silbermann@vercel.com> Co-authored-by: Hendrik Liebau <mail@hendrik-liebau.de>
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[cb skip]
Packages updated:
- react 18.3.1 -> 19.2.8 (dev)
- react-dom 18.3.1 -> 19.2.8 (dev)
- @types/react 18.3.26 -> 19.2.18 (dev)
- @types/react-dom 18.3.7 -> 19.2.4 (dev)
These are dev dependencies of @changebot/widgets-react, used to
compile the generated wrappers. The peer range stays >=16.8.0.
react-demo.html keeps loading React 18 from unpkg because React 19
publishes no UMD build, and that page uses the custom elements
directly rather than the wrapper.
== 19.2.7 (June 1, 2026)
== React Server Components
- Fixed missing `FormData` entries in Server Actions which regressed in 19.2.6 (@unstubbable [#36566](https://github.com/facebook/react/pull/36566))
== 19.2.6 (May 6, 2026)
== React Server Components
- Type hardening and performance improvements (@eps1lon, @unstubbable [#36425](https://github.com/facebook/react/pull/36425))
== 19.2.5 (March 18, 2026)
== React Server Components
- Add more cycle protections (@eps1lon, @unstubbable [#36236](https://github.com/facebook/react/pull/36236))
== 19.2.4 (Jan 26, 2026)
== React Server Components
- Add more DoS mitigations to Server Actions, and harden Server Components (@gnoff, @lubieowoce, @sebmarkbage, @unstubbable [#35632](https://github.com/facebook/react/pull/35632))
== 19.2.3 (Dec 11, 2025)
== React Server Components
- Add extra loop protection to React Server Functions (@sebmarkbage [#35351](https://github.com/facebook/react/pull/35351))
== 19.2.2 (Dec 11, 2025)
== React Server Components
- Move `react-server-dom-webpack/*.unbundled` to private `react-server-dom-unbundled` (@eps1lon [#35290](https://github.com/facebook/react/pull/35290))
- Patch Promise cycles and toString on Server Functions (@sebmarkbage, @unstubbable [#35289](https://github.com/facebook/react/pull/35289), [#35345](https://github.com/facebook/react/pull/35345))
== 19.2.1 (Dec 3, 2025)
== React Server Components
- Bring React Server Component fixes to Server Actions (@sebmarkbage [#35277](https://github.com/facebook/react/pull/35277))
== 19.2.0 (October 1st, 2025)
Below is a list of all new features, APIs, and bug fixes.
Read the [React 19.2 release post](https://react.dev/blog/2025/10/01/react-19-2) for more information.
== New React Features
- [`<Activity>`](https://react.dev/reference/react/Activity): A new API to hide and restore the UI and internal state of its children.
- [`useEffectEvent`](https://react.dev/reference/react/useEffectEvent) is a React Hook that lets you extract non-reactive logic into an [Effect Event](https://react.dev/learn/separating-events-from-effects#declaring-an-effect-event).
- [`cacheSignal`](https://react.dev/reference/react/cacheSignal) (for RSCs) lets your know when the `cache()` lifetime is over.
- [React Performance tracks](https://react.dev/reference/dev-tools/react-performance-tracks) appear on the Performance panel’s timeline in your browser developer tools
== New React DOM Features
- Added resume APIs for partial pre-rendering with Web Streams:
- [`resume`](https://react.dev/reference/react-dom/server/resume): to resume a prerender to a stream.
- [`resumeAndPrerender`](https://react.dev/reference/react-dom/static/resumeAndPrerender): to resume a prerender to HTML.
- Added resume APIs for partial pre-rendering with Node Streams:
- [`resumeToPipeableStream`](https://react.dev/reference/react-dom/server/resumeToPipeableStream): to resume a prerender to a stream.
- [`resumeAndPrerenderToNodeStream`](https://react.dev/reference/react-dom/static/resumeAndPrerenderToNodeStream): to resume a prerender to HTML.
- Updated [`prerender`](https://react.dev/reference/react-dom/static/prerender) APIs to return a `postponed` state that can be passed to the `resume` APIs.
== Notable changes
- React DOM now batches suspense boundary reveals, matching the behavior of client side rendering. This change is especially noticeable when animating the reveal of Suspense boundaries e.g. with the upcoming `<ViewTransition>` Component. React will batch as much reveals as possible before the first paint while trying to hit popular first-contentful paint metrics.
- Add Node Web Streams (`prerender`, `renderToReadableStream`) to server-side-rendering APIs for Node.js
- Use underscore instead of `:` IDs generated by useId
== All Changes
== React
- `<Activity />` was developed over many years, starting before `ClassComponent.setState` (@acdlite @sebmarkbage and many others)
- Stringify context as "SomeContext" instead of "SomeContext.Provider" (@kassens [#33507](https://github.com/facebook/react/pull/33507))
- Include stack of cause of React instrumentation errors with `%o` placeholder (@eps1lon [#34198](https://github.com/facebook/react/pull/34198))
- Fix infinite `useDeferredValue` loop in popstate event (@acdlite [#32821](https://github.com/facebook/react/pull/32821))
- Fix a bug when an initial value was passed to `useDeferredValue` (@acdlite [#34376](https://github.com/facebook/react/pull/34376))
- Fix a crash when submitting forms with Client Actions (@sebmarkbage [#33055](https://github.com/facebook/react/pull/33055))
- Hide/unhide the content of dehydrated suspense boundaries if they resuspend (@sebmarkbage [#32900](https://github.com/facebook/react/pull/32900))
- Avoid stack overflow on wide trees during Hot Reload (@sophiebits [#34145](https://github.com/facebook/react/pull/34145))
- Improve Owner and Component stacks in various places (@sebmarkbage, @eps1lon: [#33629](https://github.com/facebook/react/pull/33629), [#33724](https://github.com/facebook/react/pull/33724), [#32735](https://github.com/facebook/react/pull/32735), [#33723](https://github.com/facebook/react/pull/33723))
- Add `cacheSignal` (@sebmarkbage [#33557](https://github.com/facebook/react/pull/33557))
== React DOM
- Block on Suspensey Fonts during reveal of server-side-rendered content (@sebmarkbage [#33342](https://github.com/facebook/react/pull/33342))
- Use underscore instead of `:` for IDs generated by `useId` (@sebmarkbage, @eps1lon: [#32001](https://github.com/facebook/react/pull/32001), [https://github.com/facebook/react/pull/33342](https://github.com/facebook/react/pull/33342)[#33099](https://github.com/facebook/react/pull/33099), [#33422](https://github.com/facebook/react/pull/33422))
- Stop warning when ARIA 1.3 attributes are used (@Abdul-Omira [#34264](https://github.com/facebook/react/pull/34264))
- Allow `nonce` to be used on hoistable styles (@Andarist [#32461](https://github.com/facebook/react/pull/32461))
- Warn for using a React owned node as a Container if it also has text content (@sebmarkbage [#32774](https://github.com/facebook/react/pull/32774))
- s/HTML/text for for error messages if text hydration mismatches (@rickhanlonii [#32763](https://github.com/facebook/react/pull/32763))
- Fix a bug with `React.use` inside `React.lazy`\-ed Component (@hi-ogawa [#33941](https://github.com/facebook/react/pull/33941))
- Enable the `progressiveChunkSize` option for server-side-rendering APIs (@sebmarkbage [#33027](https://github.com/facebook/react/pull/33027))
- Fix a bug with deeply nested Suspense inside Suspense fallback when server-side-rendering (@gnoff [#33467](https://github.com/facebook/react/pull/33467))
- Avoid hanging when suspending after aborting while rendering (@gnoff [#34192](https://github.com/facebook/react/pull/34192))
- Add Node Web Streams to server-side-rendering APIs for Node.js (@sebmarkbage [#33475](https://github.com/facebook/react/pull/33475))
== React Server Components
- Preload `<img>` and `<link>` using hints before they're rendered (@sebmarkbage [#34604](https://github.com/facebook/react/pull/34604))
- Log error if production elements are rendered during development (@eps1lon [#34189](https://github.com/facebook/react/pull/34189))
- Fix a bug when returning a Temporary reference (e.g. a Client Reference) from Server Functions (@sebmarkbage [#34084](https://github.com/facebook/react/pull/34084), @denk0403 [#33761](https://github.com/facebook/react/pull/33761))
- Pass line/column to `filterStackFrame` (@eps1lon [#33707](https://github.com/facebook/react/pull/33707))
- Support Async Modules in Turbopack Server References (@lubieowoce [#34531](https://github.com/facebook/react/pull/34531))
- Add support for .mjs file extension in Webpack (@jennyscript [#33028](https://github.com/facebook/react/pull/33028))
- Fix a wrong missing key warning (@unstubbable [#34350](https://github.com/facebook/react/pull/34350))
- Make console log resolve in predictable order (@sebmarkbage [#33665](https://github.com/facebook/react/pull/33665))
== React Reconciler
- [createContainer](https://github.com/facebook/react/blob/v19.2.0/packages/react-reconciler/src/ReactFiberReconciler.js#L255-L261) and [createHydrationContainer](https://github.com/facebook/react/blob/v19.2.0/packages/react-reconciler/src/ReactFiberReconciler.js#L305-L312) had their parameter order adjusted after `on*` handlers to account for upcoming experimental APIs
== 19.1.8 (June 1, 2026)
== React Server Components
- Fixed missing `FormData` entries in Server Actions which regressed in 19.1.7 (@unstubbable [#36567](https://github.com/facebook/react/pull/36567))
== 19.1.7 (May 6, 2026)
== React Server Components
- Type hardening and performance improvements (@eps1lon, @unstubbable [#36425](https://github.com/facebook/react/pull/36425))
== 19.1.6 (March 18, 2026)
== React Server Components
- Add more cycle protections (@eps1lon, @unstubbable [#36236](https://github.com/facebook/react/pull/36236))
== 19.1.5 (Jan 26, 2026)
== React Server Components
- Add more DoS mitigations to Server Actions, and harden Server Components (@gnoff, @lubieowoce, @sebmarkbage, @unstubbable [#35632](https://github.com/facebook/react/pull/35632))
== 19.1.4 (Dec 11, 2025)
== React Server Components
- Add extra loop protection to React Server Functions (@sebmarkbage [#35351](https://github.com/facebook/react/pull/35351))
== 19.1.3 (Dec 11, 2025)
== React Server Components
- Move `react-server-dom-webpack/*.unbundled` to private `react-server-dom-unbundled` (@eps1lon [#35290](https://github.com/facebook/react/pull/35290))
- Patch Promise cycles and toString on Server Functions (@sebmarkbage, @unstubbable [#35289](https://github.com/facebook/react/pull/35289), [#35345](https://github.com/facebook/react/pull/35345))
== 19.1.2 (Dec 3, 2025)
== React Server Components
- Bring React Server Component fixes to Server Actions (@sebmarkbage [#35277](https://github.com/facebook/react/pull/35277))
== 19.1.1 (July 28, 2025)
== React
* Fixed Owner Stacks to work with ES2015 function.name semantics ([#33680](https://github.com/facebook/react/pull/33680) by @hoxyq)
== 19.1.0 (March 28, 2025)
== Owner Stack
An Owner Stack is a string representing the components that are directly responsible for rendering a particular component. You can log Owner Stacks when debugging or use Owner Stacks to enhance error overlays or other development tools. Owner Stacks are only available in development builds. Component Stacks in production are unchanged.
* An Owner Stack is a development-only stack trace that helps identify which components are responsible for rendering a particular component. An Owner Stack is distinct from a Component Stacks, which shows the hierarchy of components leading to an error.
* The [captureOwnerStack API](https://react.dev/reference/react/captureOwnerStack) is only available in development mode and returns a Owner Stack, if available. The API can be used to enhance error overlays or log component relationships when debugging. [#29923](https://github.com/facebook/react/pull/29923), [#32353](https://github.com/facebook/react/pull/32353), [#30306](https://github.com/facebook/react/pull/30306),
[#32538](https://github.com/facebook/react/pull/32538), [#32529](https://github.com/facebook/react/pull/32529), [#32538](https://github.com/facebook/react/pull/32538)
== React
* Enhanced support for Suspense boundaries to be used anywhere, including the client, server, and during hydration. [#32069](https://github.com/facebook/react/pull/32069), [#32163](https://github.com/facebook/react/pull/32163), [#32224](https://github.com/facebook/react/pull/32224), [#32252](https://github.com/facebook/react/pull/32252)
* Reduced unnecessary client rendering through improved hydration scheduling [#31751](https://github.com/facebook/react/pull/31751)
* Increased priority of client rendered Suspense boundaries [#31776](https://github.com/facebook/react/pull/31776)
* Fixed frozen fallback states by rendering unfinished Suspense boundaries on the client. [#31620](https://github.com/facebook/react/pull/31620)
* Reduced garbage collection pressure by improving Suspense boundary retries. [#31667](https://github.com/facebook/react/pull/31667)
* Fixed erroneous “Waiting for Paint” log when the passive effect phase was not delayed [#31526](https://github.com/facebook/react/pull/31526)
* Fixed a regression causing key warnings for flattened positional children in development mode. [#32117](https://github.com/facebook/react/pull/32117)
* Updated `useId` to use valid CSS selectors, changing format from `:r123:` to `«r123»`. [#32001](https://github.com/facebook/react/pull/32001)
* Added a dev-only warning for null/undefined created in useEffect, useInsertionEffect, and useLayoutEffect. [#32355](https://github.com/facebook/react/pull/32355)
* Fixed a bug where dev-only methods were exported in production builds. React.act is no longer available in production builds. [#32200](https://github.com/facebook/react/pull/32200)
* Improved consistency across prod and dev to improve compatibility with Google Closure Compiler and bindings [#31808](https://github.com/facebook/react/pull/31808)
* Improve passive effect scheduling for consistent task yielding. [#31785](https://github.com/facebook/react/pull/31785)
* Fixed asserts in React Native when passChildrenWhenCloningPersistedNodes is enabled for OffscreenComponent rendering. [#32528](https://github.com/facebook/react/pull/32528)
* Fixed component name resolution for Portal [#32640](https://github.com/facebook/react/pull/32640)
* Added support for beforetoggle and toggle events on the dialog element. [#32479](https://github.com/facebook/react/pull/32479)
== React DOM
* Fixed double warning when the `href` attribute is an empty string [#31783](https://github.com/facebook/react/pull/31783)
* Fixed an edge case where `getHoistableRoot()` didn’t work properly when the container was a Document [#32321](https://github.com/facebook/react/pull/32321)
* Removed support for using HTML comments (e.g. `<!-- -->`) as a DOM container. [#32250](https://github.com/facebook/react/pull/32250)
* Added support for `<script>` and `<template>` tags to be nested within `<select>` tags. [#31837](https://github.com/facebook/react/pull/31837)
* Fixed responsive images to be preloaded as HTML instead of headers [#32445](https://github.com/facebook/react/pull/32445)
== use-sync-external-store
* Added `exports` field to `package.json` for `use-sync-external-store` to support various entrypoints. [#25231](https://github.com/facebook/react/pull/25231)
== React Server Components
* Added `unstable_prerender`, a new experimental API for prerendering React Server Components on the server [#31724](https://github.com/facebook/react/pull/31724)
* Fixed an issue where streams would hang when receiving new chunks after a global error [#31840](https://github.com/facebook/react/pull/31840), [#31851](https://github.com/facebook/react/pull/31851)
* Fixed an issue where pending chunks were counted twice. [#31833](https://github.com/facebook/react/pull/31833)
* Added support for streaming in edge environments [#31852](https://github.com/facebook/react/pull/31852)
* Added support for sending custom error names from a server so that they are available in the client for console replaying. [#32116](https://github.com/facebook/react/pull/32116)
* Updated the server component wire format to remove IDs for hints and console.log because they have no return value [#31671](https://github.com/facebook/react/pull/31671)
* Exposed `registerServerReference` in client builds to handle server references in different environments. [#32534](https://github.com/facebook/react/pull/32534)
* Added react-server-dom-parcel package which integrates Server Components with the [Parcel bundler](https://parceljs.org/) [#31725](https://github.com/facebook/react/pull/31725), [#32132](https://github.com/facebook/react/pull/32132), [#31799](https://github.com/facebook/react/pull/31799), [#32294](https://github.com/facebook/react/pull/32294), [#31741](https://github.com/facebook/react/pull/31741)
== 19.0.7 (June 1, 2026)
== React Server Components
- Fixed missing `FormData` entries in Server Actions which regressed in 19.0.6 (@unstubbable [#36568](https://github.com/facebook/react/pull/36568))
== 19.0.6 (May 6, 2026)
== React Server Components
- Type hardening and performance improvements (@eps1lon, @unstubbable [#36425](https://github.com/facebook/react/pull/36425))
== 19.0.5 (March 18, 2026)
== React Server Components
- Add more cycle protections (@eps1lon, @unstubbable [#36236](https://github.com/facebook/react/pull/36236))
== 19.0.4 (Jan 26, 2026)
== React Server Components
- Add more DoS mitigations to Server Actions, and harden Server Components (@gnoff, @lubieowoce, @sebmarkbage, @unstubbable [#35632](https://github.com/facebook/react/pull/35632))
== 19.0.3 (Dec 11, 2025)
== React Server Components
- Add extra loop protection to React Server Functions (@sebmarkbage [#35351](https://github.com/facebook/react/pull/35351))
== 19.0.2 (Dec 11, 2025)
== React Server Components
- Patch Promise cycles and toString on Server Functions (@sebmarkbage, @unstubbable [#35289](https://github.com/facebook/react/pull/35289), [#35345](https://github.com/facebook/react/pull/35345))
== 19.0.1 (Dec 3, 2025)
== React Server Components
- Bring React Server Component fixes to Server Actions (@sebmarkbage [#35277](https://github.com/facebook/react/pull/35277))
== 19.0.0 (December 5, 2024)
Below is a list of all new features, APIs, deprecations, and breaking changes. Read [React 19 release post](https://react.dev/blog/2024/04/25/react-19) and [React 19 upgrade guide](https://react.dev/blog/2024/04/25/react-19-upgrade-guide) for more information.
> Note: To help make the upgrade to React 19 easier, we’ve published a react@18.3 release that is identical to 18.2 but adds warnings for deprecated APIs and other changes that are needed for React 19. We recommend upgrading to React 18.3.1 first to help identify any issues before upgrading to React 19.
== New Features
== React
* Actions: `startTransition` can now accept async functions. Functions passed to `startTransition` are called “Actions”. A given Transition can include one or more Actions which update state in the background and update the UI with one commit. In addition to updating state, Actions can now perform side effects including async requests, and the Action will wait for the work to finish before finishing the Transition. This feature allows Transitions to include side effects like `fetch()` in the pending state, and provides support for error handling, and optimistic updates.
* `useActionState`: is a new hook to order Actions inside of a Transition with access to the state of the action, and the pending state. It accepts a reducer that can call Actions, and the initial state used for first render. It also accepts an optional string that is used if the action is passed to a form `action` prop to support progressive enhancement in forms.
* `useOptimistic`: is a new hook to update state while a Transition is in progress. It returns the state, and a set function that can be called inside a transition to “optimistically” update the state to expected final value immediately while the Transition completes in the background. When the transition finishes, the state is updated to the new value.
* `use`: is a new API that allows reading resources in render. In React 19, `use` accepts a promise or Context. If provided a promise, `use` will suspend until a value is resolved. `use` can only be used in render but can be called conditionally.
* `ref` as a prop: Refs can now be used as props, removing the need for `forwardRef`.
* **Suspense sibling pre-warming**: When a component suspends, React will immediately commit the fallback of the nearest Suspense boundary, without waiting for the entire sibling tree to render. After the fallback commits, React will schedule another render for the suspended siblings to “pre-warm” lazy requests.
== React DOM Client
* `<form> action` prop: Form Actions allow you to manage forms automatically and integrate with `useFormStatus`. When a `<form> action` succeeds, React will automatically reset the form for uncontrolled components. The form can be reset manually with the new `requestFormReset` API.
* `<button> and <input> formAction` prop: Actions can be passed to the `formAction` prop to configure form submission behavior. This allows using different Actions depending on the input.
* `useFormStatus`: is a new hook that provides the status of the parent `<form> action`, as if the form was a Context provider. The hook returns the values: `pending`, `data`, `method`, and `action`.
* Support for Document Metadata: We’ve added support for rendering document metadata tags in components natively. React will automatically hoist them into the `<head>` section of the document.
* Support for Stylesheets: React 19 will ensure stylesheets are inserted into the `<head>` on the client before revealing the content of a Suspense boundary that depends on that stylesheet.
* Support for async scripts: Async scripts can be rendered anywhere in the component tree and React will handle ordering and deduplication.
* Support for preloading resources: React 19 ships with `preinit`, `preload`, `prefetchDNS`, and `preconnect` APIs to optimize initial page loads by moving discovery of additional resources like fonts out of stylesheet loading. They can also be used to prefetch resources used by an anticipated navigation.
== React DOM Server
* Added `prerender` and `prerenderToNodeStream` APIs for static site generation. They are designed to work with streaming environments like Node.js Streams and Web Streams. Unlike `renderToString`, they wait for data to load for HTML generation.
== React Server Components
* RSC features such as directives, server components, and server functions are now stable. This means libraries that ship with Server Components can now target React 19 as a peer dependency with a react-server export condition for use in frameworks that support the Full-stack React Architecture. The underlying APIs used to implement a React Server Components bundler or framework do not follow semver and may break between minors in React 19.x. See [docs](https://19.react.dev/reference/rsc/server-components) for how to support React Server Components.
== Deprecations
* Deprecated: `element.ref` access: React 19 supports ref as a prop, so we’re deprecating `element.ref` in favor of `element.props.ref`. Accessing will result in a warning.
* `react-test-renderer`: In React 19, react-test-renderer logs a deprecation warning and has switched to concurrent rendering for web usage. We recommend migrating your tests to [@testing-library/react](https://testing-library.com/docs/react-testing-library/intro/) or [@testing-library/react-native](https://testing-library.com/docs/react-native-testing-library/intro)
== Breaking Changes
React 19 brings in a number of breaking changes, including the removals of long-deprecated APIs. We recommend first upgrading to `18.3.1`, where we've added additional deprecation warnings. Check out the [upgrade guide](https://19.react.dev/blog/2024/04/25/react-19-upgrade-guide) for more details and guidance on codemodding.
== React
* New JSX Transform is now required: We introduced [a new JSX transform](https://legacy.reactjs.org/blog/2020/09/22/introducing-the-new-jsx-transform.html) in 2020 to improve bundle size and use JSX without importing React. In React 19, we’re adding additional improvements like using ref as a prop and JSX speed improvements that require the new transform.
* Errors in render are not re-thrown: Errors that are not caught by an Error Boundary are now reported to window.reportError. Errors that are caught by an Error Boundary are reported to console.error. We’ve introduced `onUncaughtError` and `onCaughtError` methods to `createRoot` and `hydrateRoot` to customize this error handling.
* Removed: `propTypes`: Using `propTypes` will now be silently ignored. If required, we recommend migrating to TypeScript or another type-checking solution.
* Removed: `defaultProps` for functions: ES6 default parameters can be used in place. Class components continue to support `defaultProps` since there is no ES6 alternative.
* Removed: `contextTypes` and `getChildContext`: Legacy Context for class components has been removed in favor of the `contextType` API.
* Removed: string refs: Any usage of string refs need to be migrated to ref callbacks.
* Removed: Module pattern factories: A rarely used pattern that can be migrated to regular functions.
* Removed: `React.createFactory`: Now that JSX is broadly supported, all `createFactory` usage can be migrated to JSX components.
* Removed: `react-test-renderer/shallow`: This has been a re-export of [react-shallow-renderer](https://github.com/enzymejs/react-shallow-renderer) since React 18\. If needed, you can continue to use the third-party package directly. We recommend using [@testing-library/react](https://testing-library.com/docs/react-testing-library/intro/) or [@testing-library/react-native](https://testing-library.com/docs/react-native-testing-library/intro) instead.
== React DOM
* Removed: `react-dom/test-utils`: We’ve moved `act` from `react-dom/test-utils` to react. All other utilities have been removed.
* Removed: `ReactDOM`.`render`, `ReactDOM`.`hydrate`: These have been removed in favor of the concurrent equivalents: `ReactDOM`.`createRoot` and `ReactDOM.hydrateRoot`.
* Removed: `unmountComponentAtNode`: Removed in favor of `root.unmount()`.
* Removed: `ReactDOM`.`findDOMNode`: You can replace `ReactDOM`.`findDOMNode` with DOM Refs.
== Notable Changes
== React
* `<Context>` as a provider: You can now render `<Context>` as a provider instead of `<Context.Provider>`.
* Cleanup functions for refs: When the component unmounts, React will call the cleanup function returned from the ref callback.
* `useDeferredValue` initial value argument: When provided, `useDeferredValue` will return the initial value for the initial render of a component, then schedule a re-render in the background with the `deferredValue` returned.
* Support for Custom Elements: React 19 now passes all tests on [Custom Elements Everywhere](https://custom-elements-everywhere.com/).
* StrictMode changes: `useMemo` and `useCallback` will now reuse the memoized results from the first render, during the second render. Additionally, StrictMode will now double-invoke ref callback functions on initial mount.
* UMD builds removed: To load React 19 with a script tag, we recommend using an ESM-based CDN such as [esm.sh](http://esm.sh).
== React DOM
* Diffs for hydration errors: In the case of a mismatch, React 19 logs a single error with a diff of the mismatched content.
* Compatibility with third-party scripts and extensions: React will now force a client re-render to fix up any mismatched content caused by elements inserted by third-party JS.
== TypeScript Changes
The most common changes can be codemodded with `npx types-react-codemod@latest preset-19 ./path-to-your-react-ts-files`.
* Removed deprecated TypeScript types:
* `ReactChild` (replacement: `React.ReactElement | number | string)`
* `ReactFragment` (replacement: `Iterable<React.ReactNode>`)
* `ReactNodeArray` (replacement: `ReadonlyArray<React.ReactNode>`)
* `ReactText` (replacement: `number | string`)
* `VoidFunctionComponent` (replacement: `FunctionComponent`)
* `VFC` (replacement: `FC`)
* Moved to `prop-types`: `Requireable`, `ValidationMap`, `Validator`, `WeakValidationMap`
* Moved to `create-react-class`: `ClassicComponentClass`, `ClassicComponent`, `ClassicElement`, `ComponentSpec`, `Mixin`, `ReactChildren`, `ReactHTML`, `ReactSVG`, `SFCFactory`
* Disallow implicit return in refs: refs can now accept cleanup functions. When you return something else, we can’t tell if you intentionally returned something not meant to clean up or returned the wrong value. Implicit returns of anything but functions will now error.
* Require initial argument to `useRef`: The initial argument is now required to match `useState`, `createContext` etc
* Refs are mutable by default: Ref objects returned from `useRef()` are now always mutable instead of sometimes being immutable. This feature was too confusing for users and conflicted with legit cases where refs were managed by React and manually written to.
* Strict `ReactElement` typing: The props of React elements now default to `unknown` instead of `any` if the element is typed as `ReactElement`
* JSX namespace in TypeScript: The global `JSX` namespace is removed to improve interoperability with other libraries using JSX. Instead, the JSX namespace is available from the React package: `import { JSX } from 'react'`
* Better `useReducer` typings: Most `useReducer` usage should not require explicit type arguments.
For example,
```diff
-useReducer<React.Reducer<State, Action>>(reducer)
+useReducer(reducer)
```
or
```diff
-useReducer<React.Reducer<State, Action>>(reducer)
+useReducer<State, Action>(reducer)
```
== All Changes
== React
* Add support for async Actions ([\#26621](https://github.com/facebook/react/pull/26621), [\#26726](https://github.com/facebook/react/pull/26726), [\#28078](https://github.com/facebook/react/pull/28078), [\#28097](https://github.com/facebook/react/pull/28097), [\#29226](https://github.com/facebook/react/pull/29226), [\#29618](https://github.com/facebook/react/pull/29618), [\#29670](https://github.com/facebook/react/pull/29670), [\#26716](https://github.com/facebook/react/pull/26716) by [@acdlite](https://github.com/acdlite) and [@sebmarkbage](https://github.com/sebmarkbage))
* Add `useActionState()` hook to update state based on the result of a Form Action ([\#27270](https://github.com/facebook/react/pull/27270), [\#27278](https://github.com/facebook/react/pull/27278), [\#27309](https://github.com/facebook/react/pull/27309), [\#27302](https://github.com/facebook/react/pull/27302), [\#27307](https://github.com/facebook/react/pull/27307), [\#27366](https://github.com/facebook/react/pull/27366), [\#27370](https://github.com/facebook/react/pull/27370), [\#27321](https://github.com/facebook/react/pull/27321), [\#27374](https://github.com/facebook/react/pull/27374), [\#27372](https://github.com/facebook/react/pull/27372), [\#27397](https://github.com/facebook/react/pull/27397), [\#27399](https://github.com/facebook/react/pull/27399), [\#27460](https://github.com/facebook/react/pull/27460), [\#28557](https://github.com/facebook/react/pull/28557), [\#27570](https://github.com/facebook/react/pull/27570), [\#27571](https://github.com/facebook/react/pull/27571), [\#28631](https://github.com/facebook/react/pull/28631), [\#28788](https://github.com/facebook/react/pull/28788), [\#29694](https://github.com/facebook/react/pull/29694), [\#29695](https://github.com/facebook/react/pull/29695), [\#29694](https://github.com/facebook/react/pull/29694), [\#29665](https://github.com/facebook/react/pull/29665), [\#28232](https://github.com/facebook/react/pull/28232), [\#28319](https://github.com/facebook/react/pull/28319) by [@acdlite](https://github.com/acdlite), [@eps1lon](https://github.com/eps1lon), and [@rickhanlonii](https://github.com/rickhanlonii))
* Add `use()` API to read resources in render ([\#25084](https://github.com/facebook/react/pull/25084), [\#25202](https://github.com/facebook/react/pull/25202), [\#25207](https://github.com/facebook/react/pull/25207), [\#25214](https://github.com/facebook/react/pull/25214), [\#25226](https://github.com/facebook/react/pull/25226), [\#25247](https://github.com/facebook/react/pull/25247), [\#25539](https://github.com/facebook/react/pull/25539), [\#25538](https://github.com/facebook/react/pull/25538), [\#25537](https://github.com/facebook/react/pull/25537), [\#25543](https://github.com/facebook/react/pull/25543), [\#25561](https://github.com/facebook/react/pull/25561), [\#25620](https://github.com/facebook/react/pull/25620), [\#25615](https://github.com/facebook/react/pull/25615), [\#25922](https://github.com/facebook/react/pull/25922), [\#25641](https://github.com/facebook/react/pull/25641), [\#25634](https://github.com/facebook/react/pull/25634), [\#26232](https://github.com/facebook/react/pull/26232), [\#26536](https://github.com/facebook/react/pull/26535), [\#26739](https://github.com/facebook/react/pull/26739), [\#28233](https://github.com/facebook/react/pull/28233) by [@acdlite](https://github.com/acdlite), [@MofeiZ](https://github.com/mofeiZ), [@sebmarkbage](https://github.com/sebmarkbage), [@sophiebits](https://github.com/sophiebits), [@eps1lon](https://github.com/eps1lon), and [@hansottowirtz](https://github.com/hansottowirtz))
* Add `useOptimistic()` hook to display mutated state optimistically during an async mutation ([\#26740](https://github.com/facebook/react/pull/26740), [\#26772](https://github.com/facebook/react/pull/26772), [\#27277](https://github.com/facebook/react/pull/27277), [\#27453](https://github.com/facebook/react/pull/27453), [\#27454](https://github.com/facebook/react/pull/27454), [\#27936](https://github.com/facebook/react/pull/27936) by [@acdlite](https://github.com/acdlite))
* Added an `initialValue` argument to `useDeferredValue()` hook ([\#27500](https://github.com/facebook/react/pull/27500), [\#27509](https://github.com/facebook/react/pull/27509), [\#27512](https://github.com/facebook/react/pull/27512), [\#27888](https://github.com/facebook/react/pull/27888), [\#27550](https://github.com/facebook/react/pull/27550) by [@acdlite](https://github.com/acdlite))
* Support refs as props, warn on `element.ref` access ([\#28348](https://github.com/facebook/react/pull/28348), [\#28464](https://github.com/facebook/react/pull/28464), [\#28731](https://github.com/facebook/react/pull/28731) by [@acdlite](https://github.com/acdlite))
* Support Custom Elements ([\#22184](https://github.com/facebook/react/pull/22184), [\#26524](https://github.com/facebook/react/pull/26524), [\#26523](https://github.com/facebook/react/pull/26523), [\#27511](https://github.com/facebook/react/pull/27511), [\#24541](https://github.com/facebook/react/pull/24541) by [@josepharhar](https://github.com/josepharhar), [@sebmarkbage](https://github.com/sebmarkbage), [@gnoff](https://github.com/gnoff) and [@eps1lon](https://github.com/eps1lon))
* Add ref cleanup function ([\#25686](https://github.com/facebook/react/pull/25686), [\#28883](https://github.com/facebook/react/pull/28883), [\#28910](https://github.com/facebook/react/pull/28910) by [@sammy-SC](https://github.com/sammy-SC), [@jackpope](https://github.com/jackpope), and [@kassens](https://github.com/kassens))
* Sibling pre-rendering replaced by sibling pre-warming ([\#26380](https://github.com/facebook/react/pull/26380), [\#26549](https://github.com/facebook/react/pull/26549), [\#30761](https://github.com/facebook/react/pull/30761), [\#30800](https://github.com/facebook/react/pull/30800), [\#30762](https://github.com/facebook/react/pull/30762), [\#30879](https://github.com/facebook/react/pull/30879), [\#30934](https://github.com/facebook/react/pull/30934), [\#30952](https://github.com/facebook/react/pull/30952), [\#31056](https://github.com/facebook/react/pull/31056), [\#31452](https://github.com/facebook/react/pull/31452) by [@sammy-SC](https://github.com/sammy-SC), [@acdlite](https://github.com/acdlite), [@gnoff](https://github.com/gnoff), [@jackpope](https://github.com/jackpope), [@rickhanlonii](https://github.com/rickhanlonii))
* Don’t rethrow errors at the root ([\#28627](https://github.com/facebook/react/pull/28627), [\#28641](https://github.com/facebook/react/pull/28641) by [@sebmarkbage](https://github.com/sebmarkbage))
* Batch sync discrete, continuous, and default lanes ([\#25700](https://github.com/facebook/react/pull/25700) by [@tyao1](https://github.com/tyao1))
* Switch `<Context>` to mean `<Context.Provider>` ([\#28226](https://github.com/facebook/react/pull/28226) by [@gaearon](https://github.com/gaearon))
* Changes to *StrictMode*
* Handle `info`, `group`, and `groupCollapsed` in *StrictMode* logging ([\#25172](https://github.com/facebook/react/pull/25172) by [@timneutkens](https://github.com/timneutkens))
* Refs are now attached/detached/attached in *StrictMode* ([\#25049](https://github.com/facebook/react/pull/25049) by [@sammy-SC](https://github.com/sammy-SC))
* Fix `useSyncExternalStore()` hydration in *StrictMode* ([\#26791](https://github.com/facebook/react/pull/26791) by [@sophiebits](https://github.com/sophiebits))
* Always trigger `componentWillUnmount()` in *StrictMode* ([\#26842](https://github.com/facebook/react/pull/26842) by [@tyao1](https://github.com/tyao1))
* Restore double invoking `useState()` and `useReducer()` initializer functions in *StrictMode* ([\#28248](https://github.com/facebook/react/pull/28248) by [@eps1lon](https://github.com/eps1lon))
* Reuse memoized result from first pass ([\#25583](https://github.com/facebook/react/pull/25583) by [@acdlite](https://github.com/acdlite))
* Fix `useId()` in *StrictMode* ([\#25713](https://github.com/facebook/react/pull/25713) by [@gnoff](https://github.com/gnoff))
* Add component name to *StrictMode* error messages ([\#25718](https://github.com/facebook/react/pull/25718) by [@sammy-SC](https://github.com/sammy-SC))
* Add support for rendering BigInt ([\#24580](https://github.com/facebook/react/pull/24580) by [@eps1lon](https://github.com/eps1lon))
* `act()` no longer checks `shouldYield` which can be inaccurate in test environments ([\#26317](https://github.com/facebook/react/pull/26317) by [@acdlite](https://github.com/acdlite))
* Warn when keys are spread with props ([\#25697](https://github.com/facebook/react/pull/25697), [\#26080](https://github.com/facebook/react/pull/26080) by [@sebmarkbage](https://github.com/sebmarkbage) and [@kassens](https://github.com/kassens))
* Generate sourcemaps for production build artifacts ([\#26446](https://github.com/facebook/react/pull/26446) by [@markerikson](https://github.com/markerikson))
* Improve stack diffing algorithm ([\#27132](https://github.com/facebook/react/pull/27132) by [@KarimP](https://github.com/KarimP))
* Suspense throttling lowered from 500ms to 300ms ([\#26803](https://github.com/facebook/react/pull/26803) by [@acdlite](https://github.com/acdlite))
* Lazily propagate context changes ([\#20890](https://github.com/facebook/react/pull/20890) by [@acdlite](https://github.com/acdlite) and [@gnoff](https://github.com/gnoff))
* Immediately rerender pinged fiber ([\#25074](https://github.com/facebook/react/pull/25074) by [@acdlite](https://github.com/acdlite))
* Move update scheduling to microtask ([\#26512](https://github.com/facebook/react/pull/26512) by [@acdlite](https://github.com/acdlite))
* Consistently apply throttled retries ([\#26611](https://github.com/facebook/react/pull/26611), [\#26802](https://github.com/facebook/react/pull/26802) by [@acdlite](https://github.com/acdlite))
* Suspend Thenable/Lazy if it's used in React.Children ([\#28284](https://github.com/facebook/react/pull/28284) by [@sebmarkbage](https://github.com/sebmarkbage))
* Detect infinite update loops caused by render phase updates ([\#26625](https://github.com/facebook/react/pull/26625) by [@acdlite](https://github.com/acdlite))
* Update conditional hooks warning ([\#29626](https://github.com/facebook/react/pull/29626) by [@sophiebits](https://github.com/sophiebits))
* Update error URLs to go to new docs ([\#27240](https://github.com/facebook/react/pull/27240) by [@rickhanlonii](https://github.com/rickhanlonii))
* Rename the `react.element` symbol to `react.transitional.element` ([\#28813](https://github.com/facebook/react/pull/28813) by [@sebmarkbage](https://github.com/sebmarkbage))
* Fix crash when suspending in shell during `useSyncExternalStore()` re-render ([\#27199](https://github.com/facebook/react/pull/27199) by [@acdlite](https://github.com/acdlite))
* Fix incorrect “detected multiple renderers" error in tests ([\#22797](https://github.com/facebook/react/pull/22797) by [@eps1lon](https://github.com/eps1lon))
* Fix bug where effect cleanup may be called twice after bailout ([\#26561](https://github.com/facebook/react/pull/26561) by [@acdlite](https://github.com/acdlite))
* Fix suspending in shell during discrete update ([\#25495](https://github.com/facebook/react/pull/25495) by [@acdlite](https://github.com/acdlite))
* Fix memory leak after repeated setState bailouts ([\#25309](https://github.com/facebook/react/pull/25309) by [@acdlite](https://github.com/acdlite))
* Fix `useSyncExternalStore()` dropped update when state is dispatched in render phase ([\#25578](https://github.com/facebook/react/pull/25578) by [@pandaiolo](https://github.com/pandaiolo))
* Fix logging when rendering a lazy fragment ([\#30372](https://github.com/facebook/react/pull/30372) by [@tom-sherman](https://github.com/tom-sherman))
* Remove string refs ([\#25383](https://github.com/facebook/react/pull/25383), [\#28322](https://github.com/facebook/react/pull/28322) by [@eps1lon](https://github.com/eps1lon) and [@acdlite](https://github.com/acdlite))
* Remove Legacy Context (\#30319 by [@kassens](https://github.com/kassens))
* Remove `RefreshRuntime.findAffectedHostInstances` ([\#30538](https://github.com/facebook/react/pull/30538) by [@gaearon](https://github.com/gaearon))
* Remove client caching from `cache()` API ([\#27977](https://github.com/facebook/react/pull/27977), [\#28250](https://github.com/facebook/react/pull/28250) by [@acdlite](https://github.com/acdlite) and [@gnoff](https://github.com/gnoff))
* Remove `propTypes` ([\#28324](https://github.com/facebook/react/pull/28324), [\#28326](https://github.com/facebook/react/pull/28326) by [@gaearon](https://github.com/gaearon))
* Remove `defaultProps` support, except for classes ([\#28733](https://github.com/facebook/react/pull/28733) by [@acdlite](https://github.com/acdlite))
* Remove UMD builds ([\#28735](https://github.com/facebook/react/pull/28735) by [@gnoff](https://github.com/gnoff))
* Remove delay for non-transition updates ([\#26597](https://github.com/facebook/react/pull/26597) by [@acdlite](https://github.com/acdlite))
* Remove `createFactory` ([\#27798](https://github.com/facebook/react/pull/27798) by [@kassens](https://github.com/kassens))
== React DOM
* Adds Form Actions to handle form submission ([\#26379](https://github.com/facebook/react/pull/26379), [\#26674](https://github.com/facebook/react/pull/26674), [\#26689](https://github.com/facebook/react/pull/26689), [\#26708](https://github.com/facebook/react/pull/26708), [\#26714](https://github.com/facebook/react/pull/26714), [\#26735](https://github.com/facebook/react/pull/26735), [\#26846](https://github.com/facebook/react/pull/26846), [\#27358](https://github.com/facebook/react/pull/27358), [\#28056](https://github.com/facebook/react/pull/28056) by [@sebmarkbage](https://github.com/sebmarkbage), [@acdlite](https://github.com/acdlite), and [@jupapios](https://github.com/jupapios))
* Add `useFormStatus()` hook to provide status information of the last form submission ([\#26719](https://github.com/facebook/react/pull/26719), [\#26722](https://github.com/facebook/react/pull/26722), [\#26788](https://github.com/facebook/react/pull/26788), [\#29019](https://github.com/facebook/react/pull/29019), [\#28728](https://github.com/facebook/react/pull/28728), [\#28413](https://github.com/facebook/react/pull/28413) by [@acdlite](https://github.com/acdlite) and [@eps1lon](https://github.com/eps1lon))
* Support for Document Metadata. Adds `preinit`, `preinitModule`, `preconnect`, `prefetchDNS`, `preload`, and `preloadModule` APIs.
* [\#25060](https://github.com/facebook/react/pull/25060), [\#25243](https://github.com/facebook/react/pull/25243), [\#25388](https://github.com/facebook/react/pull/25388), [\#25432](https://github.com/facebook/react/pull/25432), [\#25436](https://github.com/facebook/react/pull/25436), [\#25426](https://github.com/facebook/react/pull/25426), [\#25500](https://github.com/facebook/react/pull/25500), [\#25480](https://github.com/facebook/react/pull/25480), [\#25508](https://github.com/facebook/react/pull/25508), [\#25515](https://github.com/facebook/react/pull/25515), [\#25514](https://github.com/facebook/react/pull/25514), [\#25532](https://github.com/facebook/react/pull/25532), [\#25536](https://github.com/facebook/react/pull/25536), [\#25534](https://github.com/facebook/react/pull/25534), [\#25546](https://github.com/facebook/react/pull/25546), [\#25559](https://github.com/facebook/react/pull/25559), [\#25569](https://github.com/facebook/react/pull/25569), [\#25599](https://github.com/facebook/react/pull/25599), [\#25689](https://github.com/facebook/react/pull/25689), [\#26106](https://github.com/facebook/react/pull/26106), [\#26152](https://github.com/facebook/react/pull/26152), [\#26239](https://github.com/facebook/react/pull/26239), [\#26237](https://github.com/facebook/react/pull/26237), [\#26280](https://github.com/facebook/react/pull/26280), [\#26154](https://github.com/facebook/react/pull/26154), [\#26256](https://github.com/facebook/react/pull/26256), [\#26353](https://github.com/facebook/react/pull/26353), [\#26427](https://github.com/facebook/react/pull/26427), [\#26450](https://github.com/facebook/react/pull/26450), [\#26502](https://github.com/facebook/react/pull/26502), [\#26514](https://github.com/facebook/react/pull/26514), [\#26531](https://github.com/facebook/react/pull/26531), [\#26532](https://github.com/facebook/react/pull/26532), [\#26557](https://github.com/facebook/react/pull/26557), [\#26871](https://github.com/facebook/react/pull/26871), [\#26881](https://github.com/facebook/react/pull/26881), [\#26877](https://github.com/facebook/react/pull/26877), [\#26873](https://github.com/facebook/react/pull/26873), [\#26880](https://github.com/facebook/react/pull/26880), [\#26942](https://github.com/facebook/react/pull/26942), [\#26938](https://github.com/facebook/react/pull/26938), [\#26940](https://github.com/facebook/react/pull/26940), [\#26939](https://github.com/facebook/react/pull/26939), [\#27030](https://github.com/facebook/react/pull/27030), [\#27201](https://github.com/facebook/react/pull/27201), [\#27212](https://github.com/facebook/react/pull/27212), [\#27217](https://github.com/facebook/react/pull/27217), [\#27218](https://github.com/facebook/react/pull/27218), [\#27220](https://github.com/facebook/react/pull/27220), [\#27224](https://github.com/facebook/react/pull/27224), [\#27223](https://github.com/facebook/react/pull/27223), [\#27269](https://github.com/facebook/react/pull/27269), [\#27260](https://github.com/facebook/react/pull/27260), [\#27347](https://github.com/facebook/react/pull/27347), [\#27346](https://github.com/facebook/react/pull/27346), [\#27361](https://github.com/facebook/react/pull/27361), [\#27400](https://github.com/facebook/react/pull/27400), [\#27541](https://github.com/facebook/react/pull/27541), [\#27610](https://github.com/facebook/react/pull/27610), [\#28110](https://github.com/facebook/react/pull/28110), [\#29693](https://github.com/facebook/react/pull/29693), [\#29732](https://github.com/facebook/react/pull/29732), [\#29811](https://github.com/facebook/react/pull/29811), [\#27586](https://github.com/facebook/react/pull/27586), [\#28069](https://github.com/facebook/react/pull/28069) by [@gnoff](https://github.com/gnoff), [@sebmarkbage](https://github.com/sebmarkbage), [@acdlite](https://github.com/acdlite), [@kassens](https://github.com/kassens), [@sokra](https://github.com/sokra), [@sweetliquid](https://github.com/sweetliquid)
* Add `fetchPriority` to `<img>` and `<link>` ([\#25927](https://github.com/facebook/react/pull/25927) by [@styfle](https://github.com/styfle))
* Add support for SVG `transformOrigin` prop ([\#26130](https://github.com/facebook/react/pull/26130) by [@arav-ind](https://github.com/arav-ind))
* Add support for `onScrollEnd` event ([\#26789](https://github.com/facebook/react/pull/26789) by [@devongovett](https://github.com/devongovett))
* Allow `<hr>` as child of `<select>` ([\#27632](https://github.com/facebook/react/pull/27632) by [@SouSingh](https://github.com/SouSingh))
* Add support for Popover API ([\#27981](https://github.com/facebook/react/pull/27981) by [@eps1lon](https://github.com/eps1lon))
* Add support for `inert` ([\#24730](https://github.com/facebook/react/pull/24730) by [@eps1lon](https://github.com/eps1lon))
* Add support for `imageSizes` and `imageSrcSet` ([\#22550](https://github.com/facebook/react/pull/22550) by [@eps1lon](https://github.com/eps1lon))
* Synchronously flush transitions in popstate events ([\#26025](https://github.com/facebook/react/pull/26025), [\#27559](https://github.com/facebook/react/pull/27559), [\#27505](https://github.com/facebook/react/pull/27505), [\#30759](https://github.com/facebook/react/pull/30759) by [@tyao1](https://github.com/tyao1) and [@acdlite](https://github.com/acdlite))
* `flushSync` exhausts queue even if something throws ([\#26366](https://github.com/facebook/react/pull/26366) by [@acdlite](https://github.com/acdlite))
* Throw error if `react` and `react-dom` versions don’t match ([\#29236](https://github.com/facebook/react/pull/29236) by [@acdlite](https://github.com/acdlite))
* Ensure `srcset` and `src` are assigned last on `<img>` instances ([\#30340](https://github.com/facebook/react/pull/30340) by [@gnoff](https://github.com/gnoff))
* Javascript URLs are replaced with functions that throw errors ([\#26507](https://github.com/facebook/react/pull/26507), [\#29808](https://github.com/facebook/react/pull/29808) by [@sebmarkbage](https://github.com/sebmarkbage) and [@kassens](https://github.com/kassens))
* Treat toggle and beforetoggle as discrete events ([\#29176](https://github.com/facebook/react/pull/29176) by [@eps1lon](https://github.com/eps1lon))
* Filter out empty `src` and `href` attributes (unless for `<a href=”” />`) ([\#18513](https://github.com/facebook/react/pull/18513), [\#28124](https://github.com/facebook/react/pull/28124) by [@bvaughn](https://github.com/bvaughn) and [@eps1lon](https://github.com/eps1lon))
* Fix unitless `scale` style property ([\#25601](https://github.com/facebook/react/pull/25601) by [@JonnyBurger](https://github.com/JonnyBurger))
* Fix `onChange` error message for controlled `<select>` ([\#27740](https://github.com/facebook/react/pull/27740) by [@Biki-das](https://github.com/Biki-das))
* Fix focus restore in child windows after element reorder ([\#30951](https://github.com/facebook/react/pull/30951) by [@ling1726](https://github.com/ling1726))
* Remove `render`, `hydrate`, `findDOMNode`, `unmountComponentAtNode`, `unstable_createEventHandle`, `unstable_renderSubtreeIntoContainer`, and `unstable_runWithPriority`. Move `createRoot` and `hydrateRoot` to `react-dom/client`. ([\#28271](https://github.com/facebook/react/pull/28271) by [@gnoff](https://github.com/gnoff))
* Remove `test-utils` ([\#28541](https://github.com/facebook/react/pull/28541) by [@eps1lon](https://github.com/eps1lon))
* Remove `unstable_flushControlled` ([\#26397](https://github.com/facebook/react/pull/26397) by [@kassens](https://github.com/kassens))
* Remove legacy mode ([\#28468](https://github.com/facebook/react/pull/28468) by [@gnoff](https://github.com/gnoff))
* Remove `renderToStaticNodeStream()` ([\#28873](https://github.com/facebook/react/pull/28873) by @gnoff)
* Remove `unstable_renderSubtreeIntoContainer` ([\#29771](https://github.com/facebook/react/pull/29771) by [@kassens](https://github.com/kassens))
== React DOM Server
* Stable release of React Server Components ([Many, many PRs](https://github.com/facebook/react/pulls?q=is%3Apr+is%3Aclosed+%5BFlight%5D+in%3Atitle+created%3A%3C2024-12-01+) by [@sebmarkbage](https://github.com/sebmarkbage), [@acdlite](https://github.com/acdlite), [@gnoff](https://github.com/gnoff), [@sammy-SC](https://github.com/sammy-SC), [@gaearon](https://github.com/gaearon), [@sophiebits](https://github.com/sophiebits), [@unstubbable](https://github.com/unstubbable), [@lubieowoce](https://github.com/lubieowoce))
* Support Server Actions ([\#26124](https://github.com/facebook/react/pull/26124), [\#26632](https://github.com/facebook/react/pull/26632), [\#27459](https://github.com/facebook/react/pull/27459) by [@sebmarkbage](https://github.com/sebmarkbage) and [@acdlite](https://github.com/acdlite))
* Changes to SSR
* Add external runtime which bootstraps hydration on the client for binary transparency ([\#25437](https://github.com/facebook/react/pull/25437), [\#26169](https://github.com/facebook/react/pull/26169), [\#25499](https://github.com/facebook/react/pull/25499) by [@MofeiZ](https://github.com/mofeiZ) and [@acdlite](https://github.com/acdlite))
* Support subresource integrity for `bootstrapScripts` and `bootstrapModules` ([\#25104](https://github.com/facebook/react/pull/25104) by [@gnoff](https://github.com/gnoff))
* Fix null bytes written at text chunk boundaries ([\#26228](https://github.com/facebook/react/pull/26228) by [@sophiebits](https://github.com/sophiebits))
* Fix logic around attribute serialization ([\#26526](https://github.com/facebook/react/pull/26526) by [@gnoff](https://github.com/gnoff))
* Fix precomputed chunk cleared on Node 18 ([\#25645](https://github.com/facebook/react/pull/25645) by [@feedthejim](https://github.com/feedthejim))
* Optimize end tag chunks ([\#27522](https://github.com/facebook/react/pull/27522) by [@yujunjung](https://github.com/yujunjung))
* Gracefully handle suspending in DOM configs ([\#26768](https://github.com/facebook/react/pull/26768) by [@sebmarkbage](https://github.com/sebmarkbage))
* Check for nullish values on ReactCustomFormAction ([\#26770](https://github.com/facebook/react/pull/26770) by [@sebmarkbage](https://github.com/sebmarkbage))
* Preload `bootstrapModules`, `bootstrapScripts`, and update priority queue ([\#26754](https://github.com/facebook/react/pull/26754), [\#26753](https://github.com/facebook/react/pull/26753), [\#27190](https://github.com/facebook/react/pull/27190), [\#27189](https://github.com/facebook/react/pull/27189) by [@gnoff](https://github.com/gnoff))
* Client render the nearest child or parent suspense boundary if replay errors or is aborted ([\#27386](https://github.com/facebook/react/pull/27386) by [@sebmarkbage](https://github.com/sebmarkbage))
* Don't bail out of flushing if we still have pending root tasks ([\#27385](https://github.com/facebook/react/pull/27385) by [@sebmarkbage](https://github.com/sebmarkbage))
* Ensure Resumable State is Serializable ([\#27388](https://github.com/facebook/react/pull/27388) by [@sebmarkbage](https://github.com/sebmarkbage))
* Remove extra render pass when reverting to client render ([\#26445](https://github.com/facebook/react/pull/26445) by [@acdlite](https://github.com/acdlite))
* Fix unwinding context during selective hydration ([\#25876](https://github.com/facebook/react/pull/25876) by [@tyao1](https://github.com/tyao1))
* Stop flowing and then abort if a stream is cancelled ([\#27405](https://github.com/facebook/react/pull/27405) by [@sebmarkbage](https://github.com/sebmarkbage))
* Pass cancellation reason to abort ([\#27536](https://github.com/facebook/react/pull/27536) by [@sebmarkbage](https://github.com/sebmarkbage))
* Add `onHeaders` entrypoint option ([\#27641](https://github.com/facebook/react/pull/27641), [\#27712](https://github.com/facebook/react/pull/27712) by [@gnoff](https://github.com/gnoff))
* Escape `<style>` and `<script>` textContent to enable rendering inner content without dangerouslySetInnerHTML ([\#28870](https://github.com/facebook/react/pull/28870), [\#28871](https://github.com/facebook/react/pull/28871) by [@gnoff](https://github.com/gnoff))
* Fallback to client replaying actions for Blob serialization ([\#28987](https://github.com/facebook/react/pull/28987) by [@sebmarkbage](https://github.com/sebmarkbage))
* Render Suspense fallback if boundary contains new stylesheet during sync update ([\#28965](https://github.com/facebook/react/pull/28965) by [@gnoff](https://github.com/gnoff))
* Fix header length tracking (\#30327 by [@gnoff](https://github.com/gnoff))
* Use `srcset` to trigger load event on mount (\#30351 by [@gnoff](https://github.com/gnoff))
* Don't perform work when closing stream (\#30497 by [@gnoff](https://github.com/gnoff))
* Allow aborting during render (\#30488, [\#30730](https://github.com/facebook/react/pull/30730) by [@gnoff](https://github.com/gnoff))
* Start initial work immediately (\#31079 by [@gnoff](https://github.com/gnoff))
* A transition flowing into a dehydrated boundary no longer suspends when showing fallback ([\#27230](https://github.com/facebook/react/pull/27230) by [@acdlite](https://github.com/acdlite))
* Fix selective hydration triggers false update loop error ([\#27439](https://github.com/facebook/react/pull/27439) by [@acdlite](https://github.com/acdlite))
* Warn for Child Iterator of all types but allow Generator Components ([\#28853](https://github.com/facebook/react/pull/28853) by [@sebmarkbage](https://github.com/sebmarkbage))
* Include regular stack trace in serialized errors ([\#28684](https://github.com/facebook/react/pull/28684), [\#28738](https://github.com/facebook/react/pull/28738) by [@sebmarkbage](https://github.com/sebmarkbage))
* Aborting early no longer infinitely suspends ([\#24751](https://github.com/facebook/react/pull/24751) by [@sebmarkbage](https://github.com/sebmarkbage))
* Fix hydration warning suppression in text comparisons ([\#24784](https://github.com/facebook/react/pull/24784) by [@gnoff](https://github.com/gnoff))
* Changes to error handling in SSR
* Add diffs to hydration warnings ([\#28502](https://github.com/facebook/react/pull/28502), [\#28512](https://github.com/facebook/react/pull/28512) by [@sebmarkbage](https://github.com/sebmarkbage))
* Make Error creation lazy ([\#24728](https://github.com/facebook/react/pull/24728) by [@sebmarkbage](https://github.com/sebmarkbage))
* Remove recoverable error when a sync update flows into a dehydrated boundary ([\#25692](https://github.com/facebook/react/pull/25692) by [@sebmarkbage](https://github.com/sebmarkbage))
* Don't "fix up" mismatched text content with suppressedHydrationWarning ([\#26391](https://github.com/facebook/react/pull/26391) by [@sebmarkbage](https://github.com/sebmarkbage))
* Fix component stacks in errors ([\#27456](https://github.com/facebook/react/pull/27456) by [@sebmarkbage](https://github.com/sebmarkbage))
* Add component stacks to `onError` ([\#27761](https://github.com/facebook/react/pull/27761), [\#27850](https://github.com/facebook/react/pull/27850) by [@gnoff](https://github.com/gnoff) and [@sebmarkbage](https://github.com/sebmarkbage))
* Throw hydration mismatch errors once ([\#28502](https://github.com/facebook/react/pull/28502) by [@sebmarkbage](https://github.com/sebmarkbage))
* Add Bun streaming server renderer ([\#25597](https://github.com/facebook/react/pull/25597) by [@colinhacks](https://github.com/colinhacks))
* Add nonce support to bootstrap scripts ([\#26738](https://github.com/facebook/react/pull/26738) by [@danieltott](https://github.com/danieltott))
* Add `crossorigin` support to bootstrap scripts ([\#26844](https://github.com/facebook/react/pull/26844) by [@HenriqueLimas](https://github.com/HenriqueLimas))
* Support `nonce` and `fetchpriority` in preload links ([\#26826](https://github.com/facebook/react/pull/26826) by [@liuyenwei](https://github.com/liuyenwei))
* Add `referrerPolicy` to `ReactDOM.preload()` ([\#27096](https://github.com/facebook/react/pull/27096) by [@styfle](https://github.com/styfle))
* Add server condition for `react/jsx-dev-runtime` ([\#28921](https://github.com/facebook/react/pull/28921) by [@himself65](https://github.com/himself65))
* Export version ([\#29596](https://github.com/facebook/react/pull/29596) by [@unstubbable](https://github.com/unstubbable))
* Rename the secret export of Client and Server internals ([\#28786](https://github.com/facebook/react/pull/28786), [\#28789](https://github.com/facebook/react/pull/28789) by [@sebmarkbage](https://github.com/sebmarkbage))
* Remove layout effect warning on server ([\#26395](https://github.com/facebook/react/pull/26395) by [@rickhanlonii](https://github.com/rickhanlonii))
* Remove `errorInfo.digest` from `onRecoverableError` ([\#28222](https://github.com/facebook/react/pull/28222) by [@gnoff](https://github.com/gnoff))
== ReactTestRenderer
* Add deprecation error to `react-test-renderer` on web ([\#27903](https://github.com/facebook/react/pull/27903), [\#28904](https://github.com/facebook/react/pull/28904) by [@jackpope](https://github.com/jackpope) and [@acdlite](https://github.com/acdlite))
* Render with ConcurrentRoot on web ([\#28498](https://github.com/facebook/react/pull/28498) by [@jackpope](https://github.com/jackpope))
* Remove `react-test-renderer/shallow` export ([\#25475](https://github.com/facebook/react/pull/25475), [\#28497](https://github.com/facebook/react/pull/28497) by [@sebmarkbage](https://github.com/sebmarkbage) and [@jackpope](https://github.com/jackpope))
== React Reconciler
* Enable suspending commits without blocking render ([\#26398](https://github.com/facebook/react/pull/26398), [\#26427](https://github.com/facebook/react/pull/26427) by [@acdlite](https://github.com/acdlite))
* Remove `prepareUpdate` ([\#26583](https://github.com/facebook/react/pull/26583), [\#27409](https://github.com/facebook/react/pull/27409) by [@sebmarkbage](https://github.com/sebmarkbage) and [@sophiebits](https://github.com/sophiebits))
== React-Is
* Enable tree shaking ([\#27701](https://github.com/facebook/react/pull/27701) by [@markerikson](https://github.com/markerikson))
* Remove `isConcurrentMode` and `isAsyncMode` methods ([\#28224](https://github.com/facebook/react/pull/28224) by @gaearon)
== useSyncExternalStore
* Remove React internals access ([\#29868](https://github.com/facebook/react/pull/29868) by [@phryneas](https://github.com/phryneas))
* Fix stale selectors keeping previous store references ([\#25969](https://github.com/facebook/react/pull/25968) by [@jellevoost](https://github.com/jellevoost))
@types/react and @types/react-dom are published from DefinitelyTyped
and have no changelog.
Release notes:
- https://github.com/facebook/react/blob/main/CHANGELOG.md
- React 19 upgrade guide: https://react.dev/blog/2024/04/25/react-19-upgrade-guide
736-c41-2c1-e464fc974
added a commit
to Swiss-Armed-Forces/Loom
that referenced
this pull request
Sep 15, 2026
This MR contains the following updates:
| Package | Type | Update | Change | OpenSSF |
|---|---|---|---|---|
| [@ag-ui/client](https://github.com/ag-ui-protocol/ag-ui) | dependencies | patch | [`^0.0.57` → `^0.0.59`](https://renovatebot.com/diffs/npm/@ag-ui%2fclient/0.0.57/0.0.59) | [](https://securityscorecards.dev/viewer/?uri=github.com/ag-ui-protocol/ag-ui) |
| [@ag-ui/core](https://github.com/ag-ui-protocol/ag-ui) | dependencies | patch | [`^0.0.57` → `^0.0.59`](https://renovatebot.com/diffs/npm/@ag-ui%2fcore/0.0.57/0.0.59) | [](https://securityscorecards.dev/viewer/?uri=github.com/ag-ui-protocol/ag-ui) |
| [@eslint/js](https://eslint.org) ([source](https://github.com/eslint/eslint/tree/HEAD/packages/js)) | devDependencies | patch | [`9.39.4` → `9.39.5`](https://renovatebot.com/diffs/npm/@eslint%2fjs/9.39.4/9.39.5) | [](https://securityscorecards.dev/viewer/?uri=github.com/eslint/eslint) |
| [@testing-library/react](https://github.com/testing-library/react-testing-library) | devDependencies | patch | [`16.3.2` → `16.3.3`](https://renovatebot.com/diffs/npm/@testing-library%2freact/16.3.2/16.3.3) | [](https://securityscorecards.dev/viewer/?uri=github.com/testing-library/react-testing-library) |
| [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/node) ([source](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node)) | devDependencies | patch | [`25.9.5` → `25.9.6`](https://renovatebot.com/diffs/npm/@types%2fnode/25.9.5/25.9.6) | [](https://securityscorecards.dev/viewer/?uri=github.com/DefinitelyTyped/DefinitelyTyped) |
| [@types/react](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/react) ([source](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/react)) | devDependencies | patch | [`19.2.14` → `19.2.18`](https://renovatebot.com/diffs/npm/@types%2freact/19.2.14/19.2.18) | [](https://securityscorecards.dev/viewer/?uri=github.com/DefinitelyTyped/DefinitelyTyped) |
| [@types/react-dom](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/react-dom) ([source](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/react-dom)) | devDependencies | patch | [`19.2.3` → `19.2.7`](https://renovatebot.com/diffs/npm/@types%2freact-dom/19.2.3/19.2.7) | [](https://securityscorecards.dev/viewer/?uri=github.com/DefinitelyTyped/DefinitelyTyped) |
| [@vitejs/plugin-react](https://github.com/vitejs/vite-plugin-react/tree/main/packages/plugin-react#readme) ([source](https://github.com/vitejs/vite-plugin-react/tree/HEAD/packages/plugin-react)) | devDependencies | patch | [`6.0.1` → `6.0.5`](https://renovatebot.com/diffs/npm/@vitejs%2fplugin-react/6.0.1/6.0.5) | [](https://securityscorecards.dev/viewer/?uri=github.com/vitejs/vite-plugin-react) |
| [eslint](https://eslint.org) ([source](https://github.com/eslint/eslint)) | devDependencies | patch | [`9.39.4` → `9.39.5`](https://renovatebot.com/diffs/npm/eslint/9.39.4/9.39.5) | [](https://securityscorecards.dev/viewer/?uri=github.com/eslint/eslint) |
| [eslint-import-resolver-typescript](https://github.com/import-js/eslint-import-resolver-typescript) | devDependencies | patch | [`4.4.4` → `4.4.5`](https://renovatebot.com/diffs/npm/eslint-import-resolver-typescript/4.4.4/4.4.5) | [](https://securityscorecards.dev/viewer/?uri=github.com/import-js/eslint-import-resolver-typescript) |
| [eslint-plugin-prettier](https://github.com/prettier/eslint-plugin-prettier) | devDependencies | patch | [`5.5.5` → `5.5.6`](https://renovatebot.com/diffs/npm/eslint-plugin-prettier/5.5.5/5.5.6) | [](https://securityscorecards.dev/viewer/?uri=github.com/prettier/eslint-plugin-prettier) |
| [eslint-plugin-react-refresh](https://github.com/ArnaudBarre/eslint-plugin-react-refresh) | devDependencies | patch | [`0.5.2` → `0.5.7`](https://renovatebot.com/diffs/npm/eslint-plugin-react-refresh/0.5.2/0.5.7) | [](https://securityscorecards.dev/viewer/?uri=github.com/ArnaudBarre/eslint-plugin-react-refresh) |
| [i18next-http-backend](https://github.com/i18next/i18next-http-backend) | dependencies | patch | [`3.0.5` → `3.0.6`](https://renovatebot.com/diffs/npm/i18next-http-backend/3.0.5/3.0.6) | [](https://securityscorecards.dev/viewer/?uri=github.com/i18next/i18next-http-backend) |
| [license-report](https://github.com/bepo65/license-report) | devDependencies | patch | [`6.8.2` → `6.8.5`](https://renovatebot.com/diffs/npm/license-report/6.8.2/6.8.5) | [](https://securityscorecards.dev/viewer/?uri=github.com/bepo65/license-report) |
| [react](https://react.dev/) ([source](https://github.com/react/react/tree/HEAD/packages/react)) | dependencies | patch | [`19.2.5` → `19.2.8`](https://renovatebot.com/diffs/npm/react/19.2.5/19.2.8) | [](https://securityscorecards.dev/viewer/?uri=github.com/react/react) |
| [react-dom](https://react.dev/) ([source](https://github.com/react/react/tree/HEAD/packages/react-dom)) | dependencies | patch | [`19.2.5` → `19.2.8`](https://renovatebot.com/diffs/npm/react-dom/19.2.5/19.2.8) | [](https://securityscorecards.dev/viewer/?uri=github.com/react/react) |
| [react-i18next](https://github.com/i18next/react-i18next) | dependencies | patch | [`17.0.4` → `17.0.14`](https://renovatebot.com/diffs/npm/react-i18next/17.0.4/17.0.14) | [](https://securityscorecards.dev/viewer/?uri=github.com/i18next/react-i18next) |
| [react-router-dom](https://github.com/remix-run/react-router) ([source](https://github.com/remix-run/react-router/tree/HEAD/packages/react-router-dom)) | dependencies | patch | [`7.18.2` → `7.18.3`](https://renovatebot.com/diffs/npm/react-router-dom/7.18.2/7.18.3) | [](https://securityscorecards.dev/viewer/?uri=github.com/remix-run/react-router) |
| [uuid](https://github.com/uuidjs/uuid) | dependencies | patch | [`14.0.0` → `14.0.2`](https://renovatebot.com/diffs/npm/uuid/14.0.0/14.0.2) | [](https://securityscorecards.dev/viewer/?uri=github.com/uuidjs/uuid) |
| [vite](https://vite.dev) ([source](https://github.com/vitejs/vite/tree/HEAD/packages/vite)) | devDependencies | patch | [`8.2.1` → `8.2.2`](https://renovatebot.com/diffs/npm/vite/8.2.1/8.2.2) | [](https://securityscorecards.dev/viewer/?uri=github.com/vitejs/vite) |
| [vitest](https://vitest.dev) ([source](https://github.com/vitest-dev/vitest/tree/HEAD/packages/vitest)) | devDependencies | patch | [`4.1.4` → `4.1.11`](https://renovatebot.com/diffs/npm/vitest/4.1.4/4.1.11) | [](https://securityscorecards.dev/viewer/?uri=github.com/vitest-dev/vitest) |
---
### Release Notes
<details>
<summary>eslint/eslint (@​eslint/js)</summary>
### [`v9.39.5`](https://github.com/eslint/eslint/releases/tag/v9.39.5)
[Compare Source](https://github.com/eslint/eslint/compare/v9.39.4...v9.39.5)
##### Bug Fixes
- [`253be16`](https://github.com/eslint/eslint/commit/253be16a79a4c78eec4e0eb461b574d60dbf6b11) fix: handle unavailable require cache (backport of [#​20812](https://github.com/eslint/eslint/issues/20812) to v9.x) ([#​21065](https://github.com/eslint/eslint/issues/21065)) (Eric)
##### Documentation
- [`74930ed`](https://github.com/eslint/eslint/commit/74930edd1ce0d246819edc72705101ec271da50b) docs: switch build to Node.js 24 ([#​20894](https://github.com/eslint/eslint/issues/20894)) (Milos Djermanovic)
- [`eaec8bb`](https://github.com/eslint/eslint/commit/eaec8bb6b1ca4b36985ee0222c457d4730d47a20) docs: Add ESLint v9.x EOL notice ([#​20828](https://github.com/eslint/eslint/issues/20828)) (Milos Djermanovic)
##### Chores
- [`458205f`](https://github.com/eslint/eslint/commit/458205f7d7a4769f32bec006eecc45c6a71be16a) chore: update `@eslint/eslintrc` and `@eslint/js` for v9.39.5 ([#​21077](https://github.com/eslint/eslint/issues/21077)) (Francesco Trotta)
- [`202117b`](https://github.com/eslint/eslint/commit/202117be549534715d687f988e17f29e1dcd0622) chore: package.json update for [@​eslint/js](https://github.com/eslint/js) release (Jenkins)
- [`d9eb6ed`](https://github.com/eslint/eslint/commit/d9eb6edcc93c1319ff1d2bb9aeb6d7d47bd73a79) test: disable warning for `vm.constants.USE_MAIN_CONTEXT_DEFAULT_LOADER` ([#​21074](https://github.com/eslint/eslint/issues/21074)) (Francesco Trotta)
- [`7b431a7`](https://github.com/eslint/eslint/commit/7b431a7b19c345b8db56040b1888a3b531c3e64c) chore: override `re2` dependency for `@metascraper/helpers` ([#​21068](https://github.com/eslint/eslint/issues/21068)) (Milos Djermanovic)
- [`daf7791`](https://github.com/eslint/eslint/commit/daf77911de33be163503c6568ccb159741f4b018) chore: pin fflate\@​0.8.2 ([#​20895](https://github.com/eslint/eslint/issues/20895)) (Milos Djermanovic)
- [`daee8ba`](https://github.com/eslint/eslint/commit/daee8ba3082afbc94d3b69ddc129d4dc664716f2) ci: use pnpm in `eslint-flat-config-utils` type integration test ([#​20829](https://github.com/eslint/eslint/issues/20829)) (Milos Djermanovic)
- [`116d4be`](https://github.com/eslint/eslint/commit/116d4bec7c0ddaeaa75f92fb1271a4ab70d24ce3) ci: unpin Node.js 25.x in CI ([#​20619](https://github.com/eslint/eslint/issues/20619)) (Copilot)
</details>
<details>
<summary>testing-library/react-testing-library (@​testing-library/react)</summary>
### [`v16.3.3`](https://github.com/testing-library/react-testing-library/releases/tag/v16.3.3)
[Compare Source](https://github.com/testing-library/react-testing-library/compare/v16.3.2...v16.3.3)
##### Bug Fixes
- Avoid act() re-entrant when dispatching events ([#​1468](https://github.com/testing-library/react-testing-library/issues/1468)) ([20ce75f](https://github.com/testing-library/react-testing-library/commit/20ce75f2907ca0e5c5a8ae595c0e9a4e368c7800))
</details>
<details>
<summary>vitejs/vite-plugin-react (@​vitejs/plugin-react)</summary>
### [`v6.0.5`](https://github.com/vitejs/vite-plugin-react/blob/HEAD/packages/plugin-react/CHANGELOG.md#605-2026-07-30)
[Compare Source](https://github.com/vitejs/vite-plugin-react/compare/f4b549822ec239799d746c030abb0b9a7d8f0a04...68c0cb8796ce18bd049c3d05c5210eaf0617eac0)
##### Fixed the react compiler preset filter to be linear ([#​1353](https://github.com/vitejs/vite-plugin-react/pull/1353))
The improved filter in v6.0.3 was non-linear and caused a performance regression ([#​1349](https://github.com/vitejs/vite-plugin-react/issues/1349)). The filter was changed to be linear to avoid that.
### [`v6.0.4`](https://github.com/vitejs/vite-plugin-react/blob/HEAD/packages/plugin-react/CHANGELOG.md#604-2026-07-22)
[Compare Source](https://github.com/vitejs/vite-plugin-react/compare/640fd358a0e82393acfce4e92e19a6ac6e1641a7...f4b549822ec239799d746c030abb0b9a7d8f0a04)
##### Fixed `$RefreshSig$ is not defined` error when running `vite dev` with `NODE_ENV=production`
When running `vite dev` with `NODE_ENV=production`, the app errored with `$RefreshSig$ is not defined`.
This error is now fixed.
### [`v6.0.3`](https://github.com/vitejs/vite-plugin-react/blob/HEAD/packages/plugin-react/CHANGELOG.md#603-2026-06-23)
[Compare Source](https://github.com/vitejs/vite-plugin-react/compare/6535b55e956b425e6650ffc2cc98fd23cca1d231...640fd358a0e82393acfce4e92e19a6ac6e1641a7)
##### Improve the react compiler preset filter to reduce false-positives ([#​1138](https://github.com/vitejs/vite-plugin-react/pull/1138))
Improved the filter in the react compiler babel preset to reduce the false-positives so that less modules are processed by the react compiler.
### [`v6.0.2`](https://github.com/vitejs/vite-plugin-react/blob/HEAD/packages/plugin-react/CHANGELOG.md#602-2026-05-14)
[Compare Source](https://github.com/vitejs/vite-plugin-react/compare/1e94c06995c2afe2d1fee5aea2ef9720d35a7e02...6535b55e956b425e6650ffc2cc98fd23cca1d231)
##### Allow all options in reactCompilerPreset ([#​1189](https://github.com/vitejs/vite-plugin-react/pull/1189))
This is a type only change. Only `compilationMode` and `target` options were available for `reactCompilerPreset`.
</details>
<details>
<summary>import-js/eslint-import-resolver-typescript (eslint-import-resolver-typescript)</summary>
### [`v4.4.5`](https://github.com/import-js/eslint-import-resolver-typescript/blob/HEAD/CHANGELOG.md#445)
[Compare Source](https://github.com/import-js/eslint-import-resolver-typescript/compare/v4.4.4...v4.4.5)
##### Patch Changes
- [#​473](https://github.com/import-js/eslint-import-resolver-typescript/pull/473) [`32c61ab`](https://github.com/import-js/eslint-import-resolver-typescript/commit/32c61abccf26bd2a2267f2e0e67d82e6f88d149a) Thanks [@​leey0818](https://github.com/leey0818)! - fix: check tsconfig matching before using resolver
</details>
<details>
<summary>prettier/eslint-plugin-prettier (eslint-plugin-prettier)</summary>
### [`v5.5.6`](https://github.com/prettier/eslint-plugin-prettier/blob/HEAD/CHANGELOG.md#556)
[Compare Source](https://github.com/prettier/eslint-plugin-prettier/compare/v5.5.5...v5.5.6)
##### Patch Changes
- [#​791](https://github.com/prettier/eslint-plugin-prettier/pull/791) [`b5c96a3`](https://github.com/prettier/eslint-plugin-prettier/commit/b5c96a30d3e292a379d6e8ac030c29fd7acbc90b) Thanks [@​JounQin](https://github.com/JounQin)! - chore: bump all (dev)Dependencies
</details>
<details>
<summary>ArnaudBarre/eslint-plugin-react-refresh (eslint-plugin-react-refresh)</summary>
### [`v0.5.7`](https://github.com/ArnaudBarre/eslint-plugin-react-refresh/blob/HEAD/CHANGELOG.md#057)
[Compare Source](https://github.com/ArnaudBarre/eslint-plugin-react-refresh/compare/v0.5.6...v0.5.7)
##### Add `allowCompoundComponents` option ([#​117](https://github.com/ArnaudBarre/eslint-plugin-react-refresh/pull/117))
> Default: `false` (`true` in `vite` config)
Don't warn when components are exported as an object gathering them. Every member of the object must be a component, and a member holding an anonymous function requires a component name as key.
This should be enabled if the fast refresh implementation correctly handles this case. Vite supports it since `@vitejs/plugin-react` 4.7.0, `@vitejs/plugin-react-swc` 3.11.0.
```json
{
"react-refresh/only-export-components": [
"error",
{ "allowCompoundComponents": true }
]
}
```
Enabling this option allows code such as the following:
```jsx
const Root = () => <></>;
const Label = () => <></>;
export const Tag = { Root, Label };
```
### [`v0.5.6`](https://github.com/ArnaudBarre/eslint-plugin-react-refresh/blob/HEAD/CHANGELOG.md#056)
[Compare Source](https://github.com/ArnaudBarre/eslint-plugin-react-refresh/compare/v0.5.5...v0.5.6)
- Support re-exporting namespace components (fixes [#​116](https://github.com/ArnaudBarre/eslint-plugin-react-refresh/issues/116))
### [`v0.5.5`](https://github.com/ArnaudBarre/eslint-plugin-react-refresh/blob/HEAD/CHANGELOG.md#055)
[Compare Source](https://github.com/ArnaudBarre/eslint-plugin-react-refresh/compare/v0.5.4...v0.5.5)
- Fix SCREAMING\_SNAKE\_CASE constant exported via `export { Name }` incorrectly treated as React component [#​114](https://github.com/ArnaudBarre/eslint-plugin-react-refresh/pull/114) (fixes [#​113](https://github.com/ArnaudBarre/eslint-plugin-react-refresh/issues/113))
- Add `contentType` and `size` to `allowExportNames` in Next config [#​115](https://github.com/ArnaudBarre/eslint-plugin-react-refresh/pull/115)
### [`v0.5.4`](https://github.com/ArnaudBarre/eslint-plugin-react-refresh/blob/HEAD/CHANGELOG.md#054)
[Compare Source](https://github.com/ArnaudBarre/eslint-plugin-react-refresh/compare/v0.5.3...v0.5.4)
- Add `instant` to `allowExportNames` in Next config [#​112](https://github.com/ArnaudBarre/eslint-plugin-react-refresh/pull/112)
### [`v0.5.3`](https://github.com/ArnaudBarre/eslint-plugin-react-refresh/blob/HEAD/CHANGELOG.md#053)
[Compare Source](https://github.com/ArnaudBarre/eslint-plugin-react-refresh/compare/v0.5.2...v0.5.3)
- Fix check for non component class exported via `export { }` [#​110](https://github.com/ArnaudBarre/eslint-plugin-react-refresh/pull/110) (fixes [#​109](https://github.com/ArnaudBarre/eslint-plugin-react-refresh/issues/109))
</details>
<details>
<summary>i18next/i18next-http-backend (i18next-http-backend)</summary>
### [`v3.0.6`](https://github.com/i18next/i18next-http-backend/blob/HEAD/CHANGELOG.md#306)
[Compare Source](https://github.com/i18next/i18next-http-backend/compare/v3.0.5...v3.0.6)
- fix: allow forward slashes in `ns` values so nested namespace names (mapping to URL layouts such as `/locales/en/a/b.json`) fetch correctly again. 3.0.5's security fix applied the same strict URL-segment check to both `lng` and `ns`, which was correct for `lng` (no BCP-47 shape contains `/`) but over-strict for `ns` — nested namespaces containing `/` were never officially supported, but the behaviour fell out of the implicit string-substitution semantics of `loadPath` and is common enough in the wild to be worth accommodating. `isSafeUrlSegment` is now split into `isSafeLangUrlSegment` (strict — still rejects `/`) and `isSafeNsUrlSegment` (loose — allows `/` but still rejects `..`, `\`, URL-structure characters, control chars, prototype keys, and oversized inputs). `isSafeUrlSegment` is kept as a backwards-compatible alias for the strict check. The 3.0.5 security fix remains in force for every concrete attack pattern from the original advisory.
</details>
<details>
<summary>bepo65/license-report (license-report)</summary>
### [`v6.8.5`](https://github.com/bepo65/license-report/blob/HEAD/CHANGELOG.md#685-2026-05-28)
[Compare Source](https://github.com/bepo65/license-report/compare/v6.8.2...v6.8.5)
</details>
<details>
<summary>react/react (react)</summary>
### [`v19.2.8`](https://github.com/react/react/releases/tag/v19.2.8): 19.2.8 (July 21st, 2026)
[Compare Source](https://github.com/react/react/compare/v19.2.7...v19.2.8)
##### React Server Components
- Performance improvements when decoding
([#​37087](https://github.com/facebook/react/pull/37087) by [@​eps1lon](https://github.com/eps1lon))
### [`v19.2.7`](https://github.com/react/react/blob/HEAD/CHANGELOG.md#1927-June-1-2026)
[Compare Source](https://github.com/react/react/compare/v19.2.6...v19.2.7)
##### React Server Components
- Fixed missing `FormData` entries in Server Actions which regressed in 19.2.6 ([@​unstubbable](https://github.com/unstubbable) [#​36566](https://github.com/facebook/react/pull/36566))
### [`v19.2.6`](https://github.com/react/react/blob/HEAD/CHANGELOG.md#1926-May-6-2026)
[Compare Source](https://github.com/react/react/compare/v19.2.5...v19.2.6)
##### React Server Components
- Type hardening and performance improvements ([@​eps1lon](https://github.com/eps1lon), [@​unstubbable](https://github.com/unstubbable) [#​36425](https://github.com/facebook/react/pull/36425))
</details>
<details>
<summary>i18next/react-i18next (react-i18next)</summary>
### [`v17.0.14`](https://github.com/i18next/react-i18next/blob/HEAD/CHANGELOG.md#17014)
[Compare Source](https://github.com/i18next/react-i18next/compare/v17.0.13...v17.0.14)
- fix: the `i18n` object returned by `useTranslation` was only refreshed when `i18n.language` changed, so a `resolvedLanguage` (or `languages`) change of its own kept handing components the previous snapshot. That happens whenever the translations for the current language arrive after the switch — i18next resolves to the fallback until its store has them — and components reading `i18n.resolvedLanguage` (language switchers, for example) then stayed one switch behind. The cached wrapper is now keyed on all three language fields, which are exactly the ones the surrounding `useMemo` already depends on; wrapper identity still only changes when the language state does, so the caching from [#​1885](https://github.com/i18next/react-i18next/issues/1885) is unaffected. Reported via [next-i18next#2348](https://github.com/i18next/next-i18next/issues/2348).
### [`v17.0.13`](https://github.com/i18next/react-i18next/blob/HEAD/CHANGELOG.md#17013)
[Compare Source](https://github.com/i18next/react-i18next/compare/v17.0.12...v17.0.13)
- fix(types): the selector-form `keyPrefix` overload of `useTranslation()` is now available under `enableSelector: 'strict'`. `useTranslation` was gated on `true | 'optimize'` only, so under `'strict'` it resolved to the legacy signature and the selector overload disappeared entirely (`keyPrefix: ($) => $.ns.foo` failed with `Type '($: any) => any' is not assignable to type 'undefined'`). `Trans` already handled all three modes. Companion to the same fix for `getFixedT` in [i18next#2446](https://github.com/i18next/i18next/pull/2446). Thanks [@​hovelopin](https://github.com/hovelopin) ([#​1930](https://github.com/i18next/react-i18next/pull/1930)).
### [`v17.0.12`](https://github.com/i18next/react-i18next/blob/HEAD/CHANGELOG.md#17012)
[Compare Source](https://github.com/i18next/react-i18next/compare/v17.0.11...v17.0.12)
- fix(IcuTrans): key-less `icu.macro` nodes (`<Trans>Welcome, {name}!</Trans>`, `<Select>`, `<Plural>` without `i18nKey`) rendered an empty string since 17.0.0. The macro now emits `<IcuTrans defaultTranslation="…">` without a key and `IcuTrans` passed `undefined` to `t()`, which returns `''`. Like `Trans`, `IcuTrans` now uses `defaultTranslation` as the key when `i18nKey` is not provided.
### [`v17.0.11`](https://github.com/i18next/react-i18next/blob/HEAD/CHANGELOG.md#17011)
[Compare Source](https://github.com/i18next/react-i18next/compare/v17.0.10...v17.0.11)
- chore: `html-parse-stringify` updated to `^4.0.1`. The parser powering `<Trans>` is now actively maintained under the i18next org ([i18next/html-parse-stringify](https://github.com/i18next/html-parse-stringify)) after years without upstream releases. 4.x brings modern dual ESM/CJS packaging with an `exports` map, zero runtime dependencies, reworked TypeScript types and a long list of parser fixes (literal `<` in text, multiline/CRLF attribute values, comments containing `>`, doctype handling, quote-aware bracket handling).
- refactor(Trans): the internal `escapeLiteralLessThan` scanner (\~80 lines) is replaced by the parser's new `allowedTags` option with identical semantics: only numbered tags, kept basic HTML tags and known component names are parsed as markup, any other tag-shaped sequence in the translation stays literal text. Rendered output is unchanged (all 493 tests pass, including the [#​1880](https://github.com/i18next/react-i18next/issues/1880) and [#​1893](https://github.com/i18next/react-i18next/issues/1893) escaping cases).
### [`v17.0.10`](https://github.com/i18next/react-i18next/blob/HEAD/CHANGELOG.md#17010)
[Compare Source](https://github.com/i18next/react-i18next/compare/v17.0.9...v17.0.10)
- fix(warnings): the `useTranslation` and `Trans` "You will need to pass in an i18next instance" warnings now match the `useSSR` wording, mentioning the props/context alternatives and the most common unexplained cause at scale: duplicate react-i18next copies in monorepo setups. The `Trans` variant also referenced the internal `i18nextReactModule` name; it now points to the public `initReactI18next` API.
- feat(warnings): development-only warning (`SUSPENDED_WHILE_LOADING`, logged once) right before `useTranslation` suspends while translations are loading. With the default `useSuspense: true` and no `<Suspense>` boundary this previously surfaced as a blank screen or a cryptic React error; the warning now names both fixes (add a `<Suspense>` boundary or set `react.useSuspense: false`). No-op in production builds; the `process.env.NODE_ENV` check is wrapped so runtimes without a `process` global (raw ESM in the browser, some edge runtimes) stay silent instead of throwing.
- ci: weekly workflow typechecking the test suite against `@types/react@next` / `@types/react-dom@next`, so the next React major's type changes (like the React 18 `TFunctionResult`/children wave) surface before user reports.
### [`v17.0.9`](https://github.com/i18next/react-i18next/blob/HEAD/CHANGELOG.md#1709)
[Compare Source](https://github.com/i18next/react-i18next/compare/v17.0.8...v17.0.9)
- fix: allow TypeScript 7 in the optional `typescript` peer dependency range (`^5 || ^6 || ^7`). With `typescript@7.0.2` in a project, `npm install` failed with an `ERESOLVE` peer conflict. Fixes [#​1927](https://github.com/i18next/react-i18next/issues/1927), thanks [@​andikapradanaarif](https://github.com/andikapradanaarif).
- fix(types): `<Trans t={t} ns="ns" …>` with a `t` from `useTranslation(['ns'])` now typechecks under TypeScript 7. TS7 intersects the `Ns` inference candidates coming from the `t` prop (`readonly ['ns']`) and the `ns` prop (`'ns'`) into an unsatisfiable `'ns' & readonly ['ns']`, where TS6 resolved them. The `ns` prop on `TransProps`, `TransSelectorProps` and `IcuTransWithoutContextProps` now also accepts a single namespace out of an array-typed `Ns` (`Ns | (Ns extends readonly (infer S extends string)[] ? S : never)`) — which matches runtime behavior and is unchanged under TS5/TS6.
### [`v17.0.8`](https://github.com/i18next/react-i18next/blob/HEAD/CHANGELOG.md#1708)
[Compare Source](https://github.com/i18next/react-i18next/compare/v17.0.7...v17.0.8)
- fix(types): `<Trans i18nKey={$ => ...}>` now typechecks under `enableSelector: 'strict'`. The `Trans` component's conditional type was gated on `_EnableSelector extends true | 'optimize'`, excluding `'strict'` and falling back to the legacy string-key signature. Runtime was already correct (it calls `keyFromSelector(i18nKey)` whenever `typeof i18nKey === 'function'`); this is a type-only fix that widens the conditional to include `'strict'`. Thanks [@​Faithfinder](https://github.com/Faithfinder) ([#​1921](https://github.com/i18next/react-i18next/pull/1921))
### [`v17.0.7`](https://github.com/i18next/react-i18next/blob/HEAD/CHANGELOG.md#1707)
[Compare Source](https://github.com/i18next/react-i18next/compare/v17.0.6...v17.0.7)
- feat: `useTranslation([nsA, nsB, ...])` now passes its full namespace list to `getFixedT` via the new `scopeNs` opt (requires `i18next` ≥ v26.0.10). This makes selector calls with a secondary-namespace prefix resolve correctly under default `nsMode`: `t($ => $.nsB.foo)` previously missed silently because the bound `ns` was the primary string only and i18next's selector rewrite needed an array. Resolution semantics are unchanged — plain `t('key')` lookups still stay isolated to the primary namespace by default; use `nsMode: 'fallback'` to opt into multi-ns fallback resolution as before. Fixes [i18next#2429](https://github.com/i18next/i18next/issues/2429) for `useTranslation`-based callers.
### [`v17.0.6`](https://github.com/i18next/react-i18next/blob/HEAD/CHANGELOG.md#1706)
[Compare Source](https://github.com/i18next/react-i18next/compare/v17.0.5...v17.0.6)
- fix: restore the v17 `nodesToString` output format consumed by `i18next-cli`'s extractor while still rendering [1919](https://github.com/i18next/react-i18next/issues/1919) correctly
- 17.0.5 fixed [1919](https://github.com/i18next/react-i18next/issues/1919) by changing what `nodesToString` produced, which inadvertently changed the extracted translation strings for keep-tags wrapping non-keep React elements
- The fix now lives in the renderer: indexed `<N>` placeholders nested inside a keep-tag are scoped to that tag's own original React children (matching kept tags by name and positional occurrence at each level), so the translation string format produced by `nodesToString` is unchanged
### [`v17.0.5`](https://github.com/i18next/react-i18next/blob/HEAD/CHANGELOG.md#1705)
[Compare Source](https://github.com/i18next/react-i18next/compare/v17.0.4...v17.0.5)
- fix: `<Trans />` no longer breaks child rendering when a kept HTML node (`transKeepBasicHtmlNodesFor`) wraps a non-keep React element [1919](https://github.com/i18next/react-i18next/issues/1919) — superseded by 17.0.6, which keeps the same runtime fix without changing the `nodesToString` output
</details>
<details>
<summary>remix-run/react-router (react-router-dom)</summary>
### [`v7.18.3`](https://github.com/remix-run/react-router/compare/react-router-dom@7.18.2...react-router-dom@7.18.3)
[Compare Source](https://github.com/remix-run/react-router/compare/react-router-dom@7.18.2...react-router-dom@7.18.3)
</details>
<details>
<summary>uuidjs/uuid (uuid)</summary>
### [`v14.0.2`](https://github.com/uuidjs/uuid/blob/HEAD/CHANGELOG.md#1402-2026-08-18)
[Compare Source](https://github.com/uuidjs/uuid/compare/v14.0.1...v14.0.2)
##### Bug Fixes
- **v1:** carry nsecs overflow into the timestamp's high bits ([#​972](https://github.com/uuidjs/uuid/issues/972)) ([6adcc1d](https://github.com/uuidjs/uuid/commit/6adcc1d81bfaeb653c49d9b7ca7b0579244ae60c))
- **v1:** set the multicast bit on v1Bytes's own randomly-generated node ([#​973](https://github.com/uuidjs/uuid/issues/973)) ([b1da338](https://github.com/uuidjs/uuid/commit/b1da338815af4d919295eacb33aae340e372232a))
- **v7:** align default seq formula in v7Bytes with updateV7State ([#​965](https://github.com/uuidjs/uuid/issues/965)) ([a67db57](https://github.com/uuidjs/uuid/commit/a67db57f7ae169e97c2573fd9d852b8364f89bf8))
### [`v14.0.1`](https://github.com/uuidjs/uuid/blob/HEAD/CHANGELOG.md#1401-2026-06-20)
[Compare Source](https://github.com/uuidjs/uuid/compare/v14.0.0...v14.0.1)
##### Bug Fixes
- add types condition to node export for moduleResolution bundler ([#​961](https://github.com/uuidjs/uuid/issues/961)) ([27ffae5](https://github.com/uuidjs/uuid/commit/27ffae5e867823b8c7db255975d65358fbdb1a7e))
</details>
<details>
<summary>vitejs/vite (vite)</summary>
### [`v8.2.2`](https://github.com/vitejs/vite/blob/HEAD/packages/vite/CHANGELOG.md#830-2026-09-10)
[Compare Source](https://github.com/vitejs/vite/compare/v8.2.1...v8.2.2)
##### Features
- **build:** avoid settling seen preload dependencies for performance ([#​23446](https://github.com/vitejs/vite/issues/23446)) ([e6f6b3e](https://github.com/vitejs/vite/commit/e6f6b3e3119256daa837b2dc399058c8aa45b470))
- **devtools:** enable dev server integration ([#​23333](https://github.com/vitejs/vite/issues/23333)) ([68aeb8a](https://github.com/vitejs/vite/commit/68aeb8a3b5a5a2ccd505288999bae1a5e6942ee1))
- accept Rolldown watch options in `server.watch` ([#​23133](https://github.com/vitejs/vite/issues/23133)) ([1b5cfe3](https://github.com/vitejs/vite/commit/1b5cfe3d3777d4ceb7f35fcee9d3c4279316a084))
- add closeServer and closePreviewServer hooks ([#​23110](https://github.com/vitejs/vite/issues/23110)) ([e17d2d5](https://github.com/vitejs/vite/commit/e17d2d565b0288f169c7995adb2b192f917548e7))
- add top-level `tsconfig` option ([#​23310](https://github.com/vitejs/vite/issues/23310)) ([93164c3](https://github.com/vitejs/vite/commit/93164c3530a7b4fc7bbedfb986d6afa9546cdef3))
- add warning for unsupported hooks in plugin returned from `applyToEnvironment` hook ([#​23191](https://github.com/vitejs/vite/issues/23191)) ([fdef04f](https://github.com/vitejs/vite/commit/fdef04f112aadfea40ad3c448d96a49a04c168bd))
- **cli:** support naming the CPU profile via --profile \[name] ([#​23042](https://github.com/vitejs/vite/issues/23042)) ([a500dee](https://github.com/vitejs/vite/commit/a500deeb6f52d93ca501a0fc612a5392b939f2f5))
- **config:** warn on named imports from JSON modules ([#​23378](https://github.com/vitejs/vite/issues/23378)) ([472385e](https://github.com/vitejs/vite/commit/472385e6ec4b21e3167c7abf9769883d1c9675f8))
- **css:** minify style tag ([#​23183](https://github.com/vitejs/vite/issues/23183)) ([8156684](https://github.com/vitejs/vite/commit/8156684572bdcf73e9d8568ed67971f0467fab60))
- searched params attached to workers are now preserved ([#​22280](https://github.com/vitejs/vite/issues/22280)) ([517b97f](https://github.com/vitejs/vite/commit/517b97f57ab9473e7417da856eb641d76870a56e))
- support subpath imports in dynamic import statements ([#​23185](https://github.com/vitejs/vite/issues/23185)) ([b78e2f1](https://github.com/vitejs/vite/commit/b78e2f1bc1cba404c4bd9faf518d26ec85e89fc7))
- use `import.meta.ROLLDOWN_FILE_URL_*` for assets in JS ([#​22888](https://github.com/vitejs/vite/issues/22888)) ([4366ac4](https://github.com/vitejs/vite/commit/4366ac468343252df6d5706361a6348afa66f9cc))
- use `import.meta.ROLLDOWN_FILE_URL_*` for other plugins ([#​22894](https://github.com/vitejs/vite/issues/22894)) ([e38f29e](https://github.com/vitejs/vite/commit/e38f29ee48bea5ea3178faec5b78708e86f38afb))
- **worker:** remove worker chunk if it's detected that it's not referenced ([#​22473](https://github.com/vitejs/vite/issues/22473)) ([924997a](https://github.com/vitejs/vite/commit/924997a4bdda9115faee9bdb622fcec4fc8357f0))
##### Bug Fixes
- handle CRLF line endings in code frame positions ([#​23219](https://github.com/vitejs/vite/issues/23219)) ([9913672](https://github.com/vitejs/vite/commit/9913672bee9c34a2df7fff4c2538783cd4f43b4e))
- only treat whole `node_modules` path segments as dependencies (fix [#​17467](https://github.com/vitejs/vite/issues/17467)) ([#​23437](https://github.com/vitejs/vite/issues/23437)) ([ef0dc17](https://github.com/vitejs/vite/commit/ef0dc17ada53d1169ae5a89cb8f6482831466755))
- **build:** keep hash placeholders as-is in `resolveFileUrl` hook ([#​23422](https://github.com/vitejs/vite/issues/23422)) ([e8d6a4d](https://github.com/vitejs/vite/commit/e8d6a4d3399c739772080d70c7f3c4d548a637c9))
- **bundled-dev:** mark payload delivered on client report ([#​23373](https://github.com/vitejs/vite/issues/23373)) ([a6d43bc](https://github.com/vitejs/vite/commit/a6d43bc9e3464faa4d49f090e75e1ab334ffb7b0))
- **deps:** update all non-major dependencies ([#​23445](https://github.com/vitejs/vite/issues/23445)) ([fc7c104](https://github.com/vitejs/vite/commit/fc7c104e74d35a97fa313d5dd6f1b5e7d5b26159))
- **html:** don't inline preload link targets (fix [#​13355](https://github.com/vitejs/vite/issues/13355)) ([#​23387](https://github.com/vitejs/vite/issues/23387)) ([12e709c](https://github.com/vitejs/vite/commit/12e709ca4df1059747db1cb7c5d1cd71aba79a24))
- resolve the actual package root in findNearestMainPackageData for nested package.json ([#​23356](https://github.com/vitejs/vite/issues/23356)) ([8492422](https://github.com/vitejs/vite/commit/8492422b8f110625a90c702f42f30784e8cf19dc))
- shortcuts extend error ([#​23447](https://github.com/vitejs/vite/issues/23447)) ([4ec58d1](https://github.com/vitejs/vite/commit/4ec58d159df4a1b4799356a1fda62db88ed14752))
- **config:** close bundles when generation fails ([#​23256](https://github.com/vitejs/vite/issues/23256)) ([6bacc95](https://github.com/vitejs/vite/commit/6bacc956df5a76cc5653b9de4493453b953439fd))
- **css:** keep newline-separated srcset candidates intact ([#​23265](https://github.com/vitejs/vite/issues/23265)) ([4f9d2f4](https://github.com/vitejs/vite/commit/4f9d2f4dadc83191200de7d2154c957a711e8c3d))
- **deps:** update all non-major dependencies ([#​23337](https://github.com/vitejs/vite/issues/23337)) ([d550815](https://github.com/vitejs/vite/commit/d55081581ddd4d55667fef38e85d02ab7f879f15))
- **deps:** update all non-major dependencies ([#​23404](https://github.com/vitejs/vite/issues/23404)) ([238ad81](https://github.com/vitejs/vite/commit/238ad811c7fb9e4730cbd317d0657867ed3447b3))
- **deps:** update rolldown-related dependencies ([#​23338](https://github.com/vitejs/vite/issues/23338)) ([76e8082](https://github.com/vitejs/vite/commit/76e8082c56a2872dc8017c5672bc36cba8dcf75d))
- **deps:** update rolldown-related dependencies ([#​23405](https://github.com/vitejs/vite/issues/23405)) ([b882566](https://github.com/vitejs/vite/commit/b88256607e3a051b7bcb0b338b3c4665926b55a8))
- **dev:** run closeBundle after buildEnd failure ([#​23165](https://github.com/vitejs/vite/issues/23165)) ([8cb872e](https://github.com/vitejs/vite/commit/8cb872e7fb65b03f6068923c6aa7fcf3e71baf21))
- **hmr:** handle `import.meta.hot.invalidate` in virtual module ([#​23171](https://github.com/vitejs/vite/issues/23171)) ([6162968](https://github.com/vitejs/vite/commit/616296895bd135386d35069a479a5f188c7de298))
- **utils:** handle dot in srcset density descriptor ([#​23346](https://github.com/vitejs/vite/issues/23346)) ([b50e1b4](https://github.com/vitejs/vite/commit/b50e1b4a3d66128a4076e19769b2e29657985516))
- **utils:** match timestamp query parameter with proper delimiters ([#​23364](https://github.com/vitejs/vite/issues/23364)) ([41f3c6f](https://github.com/vitejs/vite/commit/41f3c6fff88ade015669cac5c42db946e0b6f5c9))
##### Performance Improvements
- **proxy:** pre-compile context matchers at server creation ([#​23263](https://github.com/vitejs/vite/issues/23263)) ([8abf700](https://github.com/vitejs/vite/commit/8abf700eeb2411d8402d08f8e2696effafdbe774))
##### Miscellaneous Chores
- introducing `@e18e/eslint-plugin` ([#​23357](https://github.com/vitejs/vite/issues/23357)) ([f794133](https://github.com/vitejs/vite/commit/f79413353995a2344879014410a9128b1b9f8e9a))
- remove unnecessary comment ([#​23448](https://github.com/vitejs/vite/issues/23448)) ([b919a1a](https://github.com/vitejs/vite/commit/b919a1a8b5a7c694667f993d677973f42d349458))
- delete unused `PluginContainerOptions` ([#​23382](https://github.com/vitejs/vite/issues/23382)) ([ee64401](https://github.com/vitejs/vite/commit/ee644014aab61e546742b862a7d7b0d6c7d67a7b))
- use oxfmt `sortImports` ([#​23319](https://github.com/vitejs/vite/issues/23319)) ([97ad042](https://github.com/vitejs/vite/commit/97ad042170f4c71b518239723b733dd98e8e3e76))
##### Code Refactoring
- delete unused `esbuildPlugin` ([#​23381](https://github.com/vitejs/vite/issues/23381)) ([f40efef](https://github.com/vitejs/vite/commit/f40efefbb3630cdb7235286bc2b51673d9fbfc27))
- exclude postfix from `__VITE_ASSET__` ([#​22886](https://github.com/vitejs/vite/issues/22886)) ([a6c08e1](https://github.com/vitejs/vite/commit/a6c08e10a624bd89b78683ff1b0e8cfa1d89aa45))
- remove HmrUrl concept ([#​23172](https://github.com/vitejs/vite/issues/23172)) ([67a6807](https://github.com/vitejs/vite/commit/67a680767317f8e2cb28b6b0500192f993a567cf))
- use `urlId` of `import.meta.ROLLDOWN_FILE_URL` in wasm plugin ([#​22962](https://github.com/vitejs/vite/issues/22962)) ([92bd2a7](https://github.com/vitejs/vite/commit/92bd2a7f325ed102349cdc6c1ad4b5cd25e1d72f))
##### Tests
- add `renderBuiltUrl` change changes hash ([#​23118](https://github.com/vitejs/vite/issues/23118)) ([0291408](https://github.com/vitejs/vite/commit/0291408b8443129ce6f6d1d440be8facabe9683b))
##### Beta Changelogs
##### [8.3.0-beta.1](https://github.com/vitejs/vite/compare/v8.3.0-beta.0...v8.3.0-beta.1) (2026-09-07)
See [8.3.0-beta.1 changelog](https://github.com/vitejs/vite/blob/v8.3.0-beta.1/packages/vite/CHANGELOG.md)
##### [8.3.0-beta.0](https://github.com/vitejs/vite/compare/v8.2.2...v8.3.0-beta.0) (2026-09-02)
See [8.3.0-beta.0 changelog](https://github.com/vitejs/vite/blob/v8.3.0-beta.0/packages/vite/CHANGELOG.md)
</details>
<details>
<summary>vitest-dev/vitest (vitest)</summary>
### [`v4.1.11`](https://github.com/vitest-dev/vitest/releases/tag/v4.1.11)
[Compare Source](https://github.com/vitest-dev/vitest/compare/v4.1.10...v4.1.11)
##### 🐞 Bug Fixes
- Revive global concurrency limit for test lifecycle \[backport to v4] - by [@​sheremet-va](https://github.com/sheremet-va) and [@​hi-ogawa](https://github.com/hi-ogawa) in [#​10992](https://github.com/vitest-dev/vitest/issues/10992) [<samp>(5146d)</samp>](https://github.com/vitest-dev/vitest/commit/5146df80b)
- **browser**:
- Encode iframeId in tester iframe URL \[backport to v4] - by [@​sheremet-va](https://github.com/sheremet-va), **Pduhard** and **Claude Opus 4.8** in [#​10955](https://github.com/vitest-dev/vitest/issues/10955) [<samp>(10b2c)</samp>](https://github.com/vitest-dev/vitest/commit/10b2cd201)
- Trigger playwright/chromium gc on lower disk availability \[backport to v4] - by [@​hi-ogawa](https://github.com/hi-ogawa), **Hiroshi Ogawa** and **OpenCode** in [#​10951](https://github.com/vitest-dev/vitest/issues/10951) [<samp>(9851d)</samp>](https://github.com/vitest-dev/vitest/commit/9851dbc41)
- **mocker**:
- Restrict redirect mocks to the fs allowlist \[backport to v4] - by [@​sheremet-va](https://github.com/sheremet-va) in [#​10974](https://github.com/vitest-dev/vitest/issues/10974) [<samp>(fe5a1)</samp>](https://github.com/vitest-dev/vitest/commit/fe5a11d3c)
##### [View changes on GitHub](https://github.com/vitest-dev/vitest/compare/v4.1.10...v4.1.11)
### [`v4.1.10`](https://github.com/vitest-dev/vitest/releases/tag/v4.1.10)
[Compare Source](https://github.com/vitest-dev/vitest/compare/v4.1.9...v4.1.10)
##### 🐞 Bug Fixes
- **browser**: Check fs access in builtin commands \[backport to v4] - by [@​hi-ogawa](https://github.com/hi-ogawa), **Hiroshi Ogawa** and **OpenCode (claude-opus-4-8)** in [#​10680](https://github.com/vitest-dev/vitest/issues/10680) [<samp>(5c18d)</samp>](https://github.com/vitest-dev/vitest/commit/5c18dd267)
- **vm**: Fix external module resolve error with deps optimizer query for encoded URI \[backport to v4] - by [@​SveLil](https://github.com/SveLil) and [@​hi-ogawa](https://github.com/hi-ogawa) in [#​10661](https://github.com/vitest-dev/vitest/issues/10661) [<samp>(bae52)</samp>](https://github.com/vitest-dev/vitest/commit/bae52b511)
##### [View changes on GitHub](https://github.com/vitest-dev/vitest/compare/v4.1.9...v4.1.10)
### [`v4.1.9`](https://github.com/vitest-dev/vitest/releases/tag/v4.1.9)
[Compare Source](https://github.com/vitest-dev/vitest/compare/v4.1.8...v4.1.9)
##### 🐞 Bug Fixes
- Fix `importOriginal` with optimizer and query import \[backport to v4] - by **Hiroshi Ogawa**, **David Harris**, **Codex**and **Vladimir** in [#​10546](https://github.com/vitest-dev/vitest/issues/10546) [<samp>(a5180)</samp>](https://github.com/vitest-dev/vitest/commit/a5180190c)
- **browser**:
- Wait for orchestrator readiness before resolving browser sessions \[backport to v4] - by **Vladimir** and **Séamus O'Connor** in [#​10555](https://github.com/vitest-dev/vitest/issues/10555) [<samp>(7fb29)</samp>](https://github.com/vitest-dev/vitest/commit/7fb29651a)
- Wait for iframe tester readiness before preparing \[backport to v4] - by **Vladimir** and **Séamus O'Connor** in [#​10497](https://github.com/vitest-dev/vitest/issues/10497) and [#​10556](https://github.com/vitest-dev/vitest/issues/10556) [<samp>(fbc62)</samp>](https://github.com/vitest-dev/vitest/commit/fbc626c40)
- **mocker**:
- Hoist vi.mock() for vite-plus/test imports \[backport to v4] - by **Hiroshi Ogawa**, **LongYinan**, **Claude Opus 4.8** and **Vladimir** in [#​10548](https://github.com/vitest-dev/vitest/issues/10548) [<samp>(2c955)</samp>](https://github.com/vitest-dev/vitest/commit/2c9559c02)
- **pool**:
- Prevent test run hang on worker crash \[backport to v4] - by **Ari Perkkiö** and **Jattioui Ismail** in [#​10543](https://github.com/vitest-dev/vitest/issues/10543) and [#​10564](https://github.com/vitest-dev/vitest/issues/10564) [<samp>(934b0)</samp>](https://github.com/vitest-dev/vitest/commit/934b0f587)
##### [View changes on GitHub](https://github.com/vitest-dev/vitest/compare/v4.1.8...v4.1.9)
### [`v4.1.8`](https://github.com/vitest-dev/vitest/releases/tag/v4.1.8)
[Compare Source](https://github.com/vitest-dev/vitest/compare/v4.1.7...v4.1.8)
##### 🐞 Bug Fixes
- **browser**:
- Disable client `cdp` API when `allowWrite/allowExec: false` \[backport to v4] - by [@​hi-ogawa](https://github.com/hi-ogawa) and **Codex** in [#​10450](https://github.com/vitest-dev/vitest/issues/10450) [<samp>(e4067)</samp>](https://github.com/vitest-dev/vitest/commit/e4067b3b1)
- Remove orphaned Playwright route when same module is mocked via multiple ids \[backport to v4] - by [@​toxik](https://github.com/toxik) and [@​Zelys-DFKH](https://github.com/Zelys-DFKH) in [#​10474](https://github.com/vitest-dev/vitest/issues/10474) [<samp>(675b4)</samp>](https://github.com/vitest-dev/vitest/commit/675b4343f)
##### [View changes on GitHub](https://github.com/vitest-dev/vitest/compare/v4.1.7...v4.1.8)
### [`v4.1.7`](https://github.com/vitest-dev/vitest/releases/tag/v4.1.7)
[Compare Source](https://github.com/vitest-dev/vitest/compare/v4.1.6...v4.1.7)
##### 🐞 Bug Fixes
- **runner**: Limit concurrency per task branch in addition to per leaf callbacks (backport) - by [@​hi-ogawa](https://github.com/hi-ogawa) in [#​10384](https://github.com/vitest-dev/vitest/issues/10384) [<samp>(4f0f2)</samp>](https://github.com/vitest-dev/vitest/commit/4f0f2a1ee)
##### [View changes on GitHub](https://github.com/vitest-dev/vitest/compare/v4.1.6...v4.1.7)
### [`v4.1.6`](https://github.com/vitest-dev/vitest/releases/tag/v4.1.6)
[Compare Source](https://github.com/vitest-dev/vitest/compare/v4.1.5...v4.1.6)
##### 🐞 Bug Fixes
- **browser**: Provide project reference in `ToMatchScreenshotResolvePath` - by [@​macarie](https://github.com/macarie) and [@​sheremet-va](https://github.com/sheremet-va) in [#​10138](https://github.com/vitest-dev/vitest/issues/10138) [<samp>(31882)</samp>](https://github.com/vitest-dev/vitest/commit/31882607c)
- Global `sequence.concurrent: true` with top-level `test(..., { concurrent: false })` + depreacte `sequential` test API and options - by [@​hi-ogawa](https://github.com/hi-ogawa), **Codex** and [@​sheremet-va](https://github.com/sheremet-va) in [#​10196](https://github.com/vitest-dev/vitest/issues/10196) [<samp>(2847d)</samp>](https://github.com/vitest-dev/vitest/commit/2847dfa2a)
- **browser**: Simplify orchestrator otel carrier - by [@​hi-ogawa](https://github.com/hi-ogawa) in [#​10285](https://github.com/vitest-dev/vitest/issues/10285) [<samp>(18af9)</samp>](https://github.com/vitest-dev/vitest/commit/18af98cee)
##### 🏎 Performance
- Stringify diff objects only once - by [@​sheremet-va](https://github.com/sheremet-va) in [#​10276](https://github.com/vitest-dev/vitest/issues/10276) [<samp>(9f7b1)</samp>](https://github.com/vitest-dev/vitest/commit/9f7b1528c)
##### [View changes on GitHub](https://github.com/vitest-dev/vitest/compare/v4.1.5...v4.1.6)
### [`v4.1.5`](https://github.com/vitest-dev/vitest/releases/tag/v4.1.5)
[Compare Source](https://github.com/vitest-dev/vitest/compare/v4.1.4...v4.1.5)
##### 🚀 Experimental Features
- **coverage**: Istanbul to support `instrumenter` option - by [@​BartWaardenburg](https://github.com/BartWaardenburg) and [@​AriPerkkio](https://github.com/AriPerkkio) in [#​10119](https://github.com/vitest-dev/vitest/issues/10119) [<samp>(0e0ff)</samp>](https://github.com/vitest-dev/vitest/commit/0e0ff41c7)
##### 🐞 Bug Fixes
- \--project negation excludes browser instances - by [@​felamaslen](https://github.com/felamaslen) in [#​10131](https://github.com/vitest-dev/vitest/issues/10131) [<samp>(9423d)</samp>](https://github.com/vitest-dev/vitest/commit/9423dc084)
- Project color label on html reporter - by [@​hi-ogawa](https://github.com/hi-ogawa) in [#​10142](https://github.com/vitest-dev/vitest/issues/10142) [<samp>(596f7)</samp>](https://github.com/vitest-dev/vitest/commit/596f73986)
- Fix `vi.defineHelper` called as object method - by [@​hi-ogawa](https://github.com/hi-ogawa) in [#​10163](https://github.com/vitest-dev/vitest/issues/10163) [<samp>(122c2)</samp>](https://github.com/vitest-dev/vitest/commit/122c25b5b)
- Alias `agent` reporter to `minimal` - by [@​sheremet-va](https://github.com/sheremet-va) in [#​10157](https://github.com/vitest-dev/vitest/issues/10157) [<samp>(663b9)</samp>](https://github.com/vitest-dev/vitest/commit/663b99fe3)
- Respect diff config options in soft assertions - by [@​Copilot](https://github.com/Copilot), **sheremet-va** and [@​sheremet-va](https://github.com/sheremet-va) in [#​8696](https://github.com/vitest-dev/vitest/issues/8696) [<samp>(9787d)</samp>](https://github.com/vitest-dev/vitest/commit/9787dedad)
- Respect diff config options in soft assertions " - by [@​sheremet-va](https://github.com/sheremet-va) in [#​8696](https://github.com/vitest-dev/vitest/issues/8696) [<samp>(7dc6d)</samp>](https://github.com/vitest-dev/vitest/commit/7dc6d54fd)
- **ast-collect**: Recognize \_*vi\_import* prefix in static test discovery - by [@​Yejneshwar](https://github.com/Yejneshwar) in [#​10129](https://github.com/vitest-dev/vitest/issues/10129) [<samp>(32546)</samp>](https://github.com/vitest-dev/vitest/commit/325463ab2)
- **coverage**: Descriptive error message when reports directory is removed during test run - by [@​DaveT1991](https://github.com/DaveT1991) and [@​AriPerkkio](https://github.com/AriPerkkio) in [#​10117](https://github.com/vitest-dev/vitest/issues/10117) [<samp>(14133)</samp>](https://github.com/vitest-dev/vitest/commit/1413382e1)
- **snapshot**: Increase default snapshot max output length - by [@​hi-ogawa](https://github.com/hi-ogawa) and **Codex** in [#​10150](https://github.com/vitest-dev/vitest/issues/10150) [<samp>(21e66)</samp>](https://github.com/vitest-dev/vitest/commit/21e66ff63)
- **ui**: Fix jsx/tsx syntax highlight - by [@​hi-ogawa](https://github.com/hi-ogawa) in [#​10152](https://github.com/vitest-dev/vitest/issues/10152) [<samp>(f1b1f)</samp>](https://github.com/vitest-dev/vitest/commit/f1b1f6c7b)
- **web-worker**: Support MessagePort objects referenced inside postMessage data - by [@​whitphx](https://github.com/whitphx) and **Claude Opus 4.6 (1M context)** in [#​9927](https://github.com/vitest-dev/vitest/issues/9927) and [#​10124](https://github.com/vitest-dev/vitest/issues/10124) [<samp>(7ad7d)</samp>](https://github.com/vitest-dev/vitest/commit/7ad7d39af)
- **api**: Make test-specification options writable - by [@​sheremet-va](https://github.com/sheremet-va) in [#​10154](https://github.com/vitest-dev/vitest/issues/10154) [<samp>(6abd5)</samp>](https://github.com/vitest-dev/vitest/commit/6abd557b7)
##### [View changes on GitHub](https://github.com/vitest-dev/vitest/compare/v4.1.4...v4.1.5)
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See merge request swiss-armed-forces/cyber-command/cea/loom!459
Co-authored-by: Loom MR Pipeline Trigger <group_103951964_bot_9504bb8dead6d4e406ad817a607f24be@noreply.gitlab.com>
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This fixes security vulnerabilities in Server Functions.